网上书城后端所需的jar包及工具类

2024年5月2日 互联网

网上书城所需的jar包及工具类

  • 需求
    • 需要哪些jar包
    • 需要哪些工具类
      • util包
        • BaseDao.java
        • BuildTree.java
        • DateUtil.java
        • DBAccess.java
        • EasyuiResult.java
        • EncodingFiter.java
        • MD5.java
        • PageBean.java
        • PinYinUtil.java
        • PropertiesUtil.java
        • ResponseUtil.java
        • StringUtils.java
        • config.properties
      • tag包
        • PageTag 分页
      • vo包
        • TreeVo

先创建一个网上书城的项目，用于编写后端代码

需求

需要哪些jar包

jar包总共需要23个，分别是在这里插入图片描述

需要哪些工具类

做网上书城需要util包，tag包，vo包中的工具类在这里插入图片描述

util包

BaseDao.java
package com.tang.util;import java.lang.reflect.Field;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;/**** 做通用的增删改 分页 的父类*/
public class BaseDao<T> {
//    查询public List<T> executeQuery(String sql, PageBean pageBean,Class clz)throws  Exception{List<T> list = new ArrayList<>();Connection con = DBAccess.getConnection();PreparedStatement pst=null;ResultSet rs = null;if (pageBean!=null && pageBean.isPagination()){
//            获取符合条件的总记录数用于后续分页String countSql = getCountSql(sql);pst = con.prepareStatement(countSql);rs = pst.executeQuery();if(rs.next()){pageBean.setTotal(rs.getObject(1).toString());}//            查询出页面要展示的结果String pageSql = getPageSql(sql,pageBean.getStartIndex(),pageBean.getRows());pst = con.prepareStatement(pageSql);rs = pst.executeQuery();}else{
//            不分页pst = con.prepareStatement(sql);rs = pst.executeQuery();}T t;while (rs.next()){
//            通过反射解决通用查询的问题
//            list.add(new Book(rs.getInt("bid"),rs.getString("bname"),rs.getFloat("price")));
//            通过反射来做t = (T) clz.newInstance();
//            给t中的属性赋值Field[] fields = clz.getDeclaredFields();for (Field f : fields) {f.setAccessible(true);f.set(t,rs.getObject(f.getName()));}list.add(t);}DBAccess.close(con,pst,rs);return list;}//    用原始sql拼装出查询符合条件分页展示的数据的sqlprivate String getPageSql(String sql, int startIndex, int rows) {return sql+" limit "+startIndex+","+rows;}//    用原始sql拼装出查询符合条件的总记录的sqlprivate String getCountSql(String sql) {return " select count(1) from ("+sql+") t";}/*** 通用的增删改操作（hibernate/mybatis的底层）* @param sql* @param t   book* @param attrs     book实例中的属性* @return* @throws Exception*/public int executeUpdate(String sql, T t,String[] attrs)throws  Exception{Connection con = DBAccess.getConnection();PreparedStatement pst = con.prepareStatement(sql);
//        pst.setObject(1, book.getBid());
//        pst.setObject(2, book.getBname());
//        pst.setObject(3, book.getPrice());Field f = null;Field[] fields = t.getClass().getDeclaredFields();for (int i = 0; i < attrs.length; i++) {
//            属性数组中的第i个属性对象     下标从0开始f = t.getClass().getDeclaredField(attrs[i]);f.setAccessible(true);
//            给第i+1占位符赋值     下表从1开始pst.setObject(i+1,f.get(t));}int num = pst.executeUpdate();DBAccess.close(con,pst,null);return num;}}
BuildTree.java
package com.tang.util;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;import com.tang.vo.TreeVo;public class BuildTree {/*** 默认-1为顶级节点* @param nodes* @param <T>* @return*/public static <T> TreeVo<T> build(List<TreeVo<T>> nodes) {if (nodes == null) {return null;}List<TreeVo<T>> topNodes = new ArrayList<TreeVo<T>>();for (TreeVo<T> children : nodes) {String pid = children.getParentId();if (pid == null || "-1".equals(pid)) {topNodes.add(children);continue;}for (TreeVo<T> parent : nodes) {String id = parent.getId();if (id != null && id.equals(pid)) {parent.getChildren().add(children);children.setHasParent(true);parent.setChildren(true);continue;}}}TreeVo<T> root = new TreeVo<T>();if (topNodes.size() == 1) {root = topNodes.get(0);} else {root.setId("000");root.setParentId("-1");root.setHasParent(false);root.setChildren(true);root.setChecked(true);root.setChildren(topNodes);root.setText("顶级节点");Map<String, Object> state = new HashMap<>(16);state.put("opened", true);root.setState(state);}return root;}/*** 指定idparam为顶级节点* @param nodes* @param idParam* @param <T>* @return*/public static <T> List<TreeVo<T>> buildList(List<TreeVo<T>> nodes, String idParam) {if (nodes == null) {return null;}List<TreeVo<T>> topNodes = new ArrayList<TreeVo<T>>();for (TreeVo<T> children : nodes) {String pid = children.getParentId();if (pid == null || idParam.equals(pid)) {topNodes.add(children);continue;}for (TreeVo<T> parent : nodes) {String id = parent.getId();if (id != null && id.equals(pid)) {parent.getChildren().add(children);children.setHasParent(true);parent.setChildren(true);continue;}}}return topNodes;}}
DateUtil.java
package com.tang.util;import java.text.SimpleDateFormat;
import java.util.Date;/*** 日期处理工具包* @author Administrator**/
public class DateUtil {/*** 日期转字符串* @param date* @param format* @return*/public static String formatDate(Date date,String format){String result="";SimpleDateFormat sdf=new SimpleDateFormat(format);if(date!=null){result=sdf.format(date);}return result;}/*** 字符串转日期* @param str* @param format* @return* @throws Exception*/public static Date formatString(String str,String format) throws Exception{SimpleDateFormat sdf=new SimpleDateFormat(format);return sdf.parse(str);}/*** 获取当前时间的字符串* @return* @throws Exception*/public static String getCurrentDateStr()throws Exception{Date date=new Date();SimpleDateFormat sdf=new SimpleDateFormat("yyyyMMddhhmmss");return sdf.format(date);}
}
DBAccess.java
package com.tang.util;import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;/*** 提供了一组获得或关闭数据库对象的方法* */
public class DBAccess {private static String driver;private static String url;private static String user;private static String password;static {// 静态块执行一次，加载 驱动一次try {InputStream is = DBAccess.class.getResourceAsStream("config.properties");Properties properties = new Properties();properties.load(is);driver = properties.getProperty("driver");url = properties.getProperty("url");user = properties.getProperty("user");password = properties.getProperty("pwd");Class.forName(driver);} catch (Exception e) {e.printStackTrace();throw new RuntimeException(e);}}/*** 获得数据连接对象* * @return*/public static Connection getConnection() {try {Connection conn = DriverManager.getConnection(url, user, password);return conn;} catch (SQLException e) {e.printStackTrace();throw new RuntimeException(e);}}public static void close(ResultSet rs) {if (null != rs) {try {rs.close();} catch (SQLException e) {e.printStackTrace();throw new RuntimeException(e);}}}public static void close(Statement stmt) {if (null != stmt) {try {stmt.close();} catch (SQLException e) {e.printStackTrace();throw new RuntimeException(e);}}}public static void close(Connection conn) {if (null != conn) {try {conn.close();} catch (SQLException e) {e.printStackTrace();throw new RuntimeException(e);}}}public static void close(Connection conn, Statement stmt, ResultSet rs) {close(rs);close(stmt);close(conn);}public static boolean isOracle() {return "oracle.jdbc.driver.OracleDriver".equals(driver);}public static boolean isSQLServer() {return "com.microsoft.sqlserver.jdbc.SQLServerDriver".equals(driver);}public static boolean isMysql() {return "com.mysql.jdbc.Driver".equals(driver);}public static void main(String[] args) {Connection conn = DBAccess.getConnection();DBAccess.close(conn);System.out.println("isOracle：" + isOracle());System.out.println("isSQLServer：" + isSQLServer());System.out.println("isMysql：" + isMysql());System.out.println("数据库连接(关闭)成功");}
}
EasyuiResult.java
package com.tang.util;public class EasyuiResult<T> {private long total;private T rows;private int code;private String msg;
//    响应成功public static EasyuiResult SUCCESS = new EasyuiResult(200,"响应成功");private EasyuiResult(int code, String msg) {this.code = code;this.msg = msg;}private EasyuiResult(long total, T rows) {this.total = total;this.rows = rows;}private EasyuiResult(T rows) {this.rows = rows;}//    带分页的public static <T> EasyuiResult<T> ok(long total, T rows){return new EasyuiResult<T>(total,rows);}//    不带分页的public static <T> EasyuiResult<T> ok(T rows){return new EasyuiResult<T>(rows);}public long getTotal() {return total;}public void setTotal(long total) {this.total = total;}public T getRows() {return rows;}public void setRows(T rows) {this.rows = rows;}public int getCode() {return code;package com.tang.util;import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;/*** 中文乱码处理* */
@WebFilter(filterName = "encodingFiter",urlPatterns = "/*")
public class EncodingFiter implements Filter {private String encoding = "UTF-8";// 默认字符集public EncodingFiter() {super();}public void destroy() {}public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {HttpServletRequest req = (HttpServletRequest) request;HttpServletResponse res = (HttpServletResponse) response;// 中文处理必须放到 chain.doFilter(request, response)方法前面res.setContentType("text/html;charset=" + this.encoding);if (req.getMethod().equalsIgnoreCase("post")) {req.setCharacterEncoding(this.encoding);} else {
//			Map map = req.getParameterMap();// 保存所有参数名=参数值(数组)的Map集合
//			Set set = map.keySet();// 取出所有参数名
//			Iterator it = set.iterator();
//			while (it.hasNext()) {
//				String name = (String) it.next();
//				String[] values = (String[]) map.get(name);// 取出参数值[注：参数值为一个数组]
//				for (int i = 0; i < values.length; i++) {
//					values[i] = new String(values[i].getBytes("ISO-8859-1"),
//							this.encoding);
//				}
//			}}chain.doFilter(request, response);}public void init(FilterConfig filterConfig) throws ServletException {String s = filterConfig.getInitParameter("encoding");// 读取web.xml文件中配置的字符集if (null != s && !s.trim().equals("")) {this.encoding = s.trim();}}}}public void setCode(int code) {this.code = code;}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}private EasyuiResult(long total, T rows, int code, String msg) {super();this.total = total;this.rows = rows;this.code = code;this.msg = msg;}private EasyuiResult() {super();}}
EncodingFiter.java
package com.tang.util;import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;/*** 中文乱码处理* */
@WebFilter(filterName = "encodingFiter",urlPatterns = "/*")
public class EncodingFiter implements Filter {private String encoding = "UTF-8";// 默认字符集public EncodingFiter() {super();}public void destroy() {}public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException {HttpServletRequest req = (HttpServletRequest) request;HttpServletResponse res = (HttpServletResponse) response;// 中文处理必须放到 chain.doFilter(request, response)方法前面res.setContentType("text/html;charset=" + this.encoding);if (req.getMethod().equalsIgnoreCase("post")) {req.setCharacterEncoding(this.encoding);} else {
//			Map map = req.getParameterMap();// 保存所有参数名=参数值(数组)的Map集合
//			Set set = map.keySet();// 取出所有参数名
//			Iterator it = set.iterator();
//			while (it.hasNext()) {
//				String name = (String) it.next();
//				String[] values = (String[]) map.get(name);// 取出参数值[注：参数值为一个数组]
//				for (int i = 0; i < values.length; i++) {
//					values[i] = new String(values[i].getBytes("ISO-8859-1"),
//							this.encoding);
//				}
//			}}chain.doFilter(request, response);}public void init(FilterConfig filterConfig) throws ServletException {String s = filterConfig.getInitParameter("encoding");// 读取web.xml文件中配置的字符集if (null != s && !s.trim().equals("")) {this.encoding = s.trim();}}}
MD5.java

给密码进行加密

package com.tang.util;/*** 使用MD5算法对字符串进行加密的工具类。 MD5即Message-Digest* Algorithm5(信息-摘要算法5)，是一种用于产生数字签名的单项散列算法， 这个算法是不可逆的，* 也就是说即使你看到源程序和算法描述，也无法将一个MD5的值变换回原始的字符串**/
public class MD5 {/** 下面这些S11-S44实际上是一个4*4的矩阵，在原始的C实现中是用#define 实现的， 这里把它们实现成为static* final是表示了只读，切能在同一个进程空间内的多个 Instance间共享*/private static final int S11 = 7;private static final int S12 = 12;private static final int S13 = 17;private static final int S14 = 22;private static final int S21 = 5;private static final int S22 = 9;private static final int S23 = 14;private static final int S24 = 20;private static final int S31 = 4;private static final int S32 = 11;private static final int S33 = 16;private static final int S34 = 23;private static final int S41 = 6;private static final int S42 = 10;private static final int S43 = 15;private static final int S44 = 21;private static final byte[] PADDING = { -128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0, 0, 0, 0, 0, 0, 0, 0, 0 };/** 下面的三个成员是MD5计算过程中用到的3个核心数据，在原始的C实现中 被定义到MD5_CTX结构中**/private long[] state = new long[4]; // state (ABCD)private long[] count = new long[2];// number of bits, modulo 2^64(lsbfirst)private byte[] buffer = new byte[64]; // input buffer/** digest,是最新一次计算结果的2进制内部表示，表示128bit的MD5值.*/private byte[] digest = new byte[16];public MD5() {md5Init();}/** getMD5ofStr是类MD5最主要的公共方法，入口参数是你想要进行MD5变换的字符串* 返回的是变换完的结果，这个结果是从公共成员digestHexStr取得的．*/public String getMD5ofStr(String inbuf) {md5Init();md5Update(inbuf.getBytes(), inbuf.length());md5Final();String digestHexStr = "";for (int i = 0; i < 16; i++) {digestHexStr += byteHEX(digest[i]);}return digestHexStr;}/* md5Init是一个初始化函数，初始化核心变量，装入标准的幻数 */private void md5Init() {count[0] = 0L;count[1] = 0L;// /* Load magic initialization constants.state[0] = 0x67452301L;state[1] = 0xefcdab89L;state[2] = 0x98badcfeL;state[3] = 0x10325476L;return;}/** F, G, H ,I 是4个基本的MD5函数，在原始的MD5的C实现中，由于它们是* 简单的位运算，可能出于效率的考虑把它们实现成了宏，在java中，我们把它们 实现成了private方法，名字保持了原来C中的。*/private long F(long x, long y, long z) {return (x & y) | ((~x) & z);}private long G(long x, long y, long z) {return (x & z) | (y & (~z));}private long H(long x, long y, long z) {return x ^ y ^ z;}private long I(long x, long y, long z) {return y ^ (x | (~z));}/** FF,GG,HH和II将调用F,G,H,I进行近一步变换 FF, GG, HH, and II transformations for* rounds 1, 2, 3, and 4. Rotation is separate from addition to prevent* recomputation.*/private long FF(long a, long b, long c, long d, long x, long s, long ac) {a += F(b, c, d) + x + ac;a = ((int) a << s) | ((int) a >>> (32 - s));a += b;return a;}private long GG(long a, long b, long c, long d, long x, long s, long ac) {a += G(b, c, d) + x + ac;a = ((int) a << s) | ((int) a >>> (32 - s));a += b;return a;}private long HH(long a, long b, long c, long d, long x, long s, long ac) {a += H(b, c, d) + x + ac;a = ((int) a << s) | ((int) a >>> (32 - s));a += b;return a;}private long II(long a, long b, long c, long d, long x, long s, long ac) {a += I(b, c, d) + x + ac;a = ((int) a << s) | ((int) a >>> (32 - s));a += b;return a;}/** md5Update是MD5的主计算过程，inbuf是要变换的字节串，inputlen是长度，这个* 函数由getMD5ofStr调用，调用之前需要调用md5init，因此把它设计成private的*/private void md5Update(byte[] inbuf, int inputLen) {int i, index, partLen;byte[] block = new byte[64];index = (int) (count[0] >>> 3) & 0x3F;// /* Update number of bits */if ((count[0] += (inputLen << 3)) < (inputLen << 3))count[1]++;count[1] += (inputLen >>> 29);partLen = 64 - index;// Transform as many times as possible.if (inputLen >= partLen) {md5Memcpy(buffer, inbuf, index, 0, partLen);md5Transform(buffer);for (i = partLen; i + 63 < inputLen; i += 64) {md5Memcpy(block, inbuf, 0, i, 64);md5Transform(block);}index = 0;} elsei = 0;// /* Buffer remaining input */md5Memcpy(buffer, inbuf, index, i, inputLen - i);}/** md5Final整理和填写输出结果*/private void md5Final() {byte[] bits = new byte[8];int index, padLen;// /* Save number of bits */Encode(bits, count, 8);// /* Pad out to 56 mod 64.index = (int) (count[0] >>> 3) & 0x3f;padLen = (index < 56) ? (56 - index) : (120 - index);md5Update(PADDING, padLen);// /* Append length (before padding) */md5Update(bits, 8);// /* Store state in digest */Encode(digest, state, 16);}/** md5Memcpy是一个内部使用的byte数组的块拷贝函数，从input的inpos开始把len长度的* 字节拷贝到output的outpos位置开始*/private void md5Memcpy(byte[] output, byte[] input, int outpos, int inpos,int len) {int i;for (i = 0; i < len; i++)output[outpos + i] = input[inpos + i];}/** md5Transform是MD5核心变换程序，有md5Update调用，block是分块的原始字节*/private void md5Transform(byte block[]) {long a = state[0], b = state[1], c = state[2], d = state[3];long[] x = new long[16];Decode(x, block, 64);/* Round 1 */a = FF(a, b, c, d, x[0], S11, 0xd76aa478L); /* 1 */d = FF(d, a, b, c, x[1], S12, 0xe8c7b756L); /* 2 */c = FF(c, d, a, b, x[2], S13, 0x242070dbL); /* 3 */b = FF(b, c, d, a, x[3], S14, 0xc1bdceeeL); /* 4 */a = FF(a, b, c, d, x[4], S11, 0xf57c0fafL); /* 5 */d = FF(d, a, b, c, x[5], S12, 0x4787c62aL); /* 6 */c = FF(c, d, a, b, x[6], S13, 0xa8304613L); /* 7 */b = FF(b, c, d, a, x[7], S14, 0xfd469501L); /* 8 */a = FF(a, b, c, d, x[8], S11, 0x698098d8L); /* 9 */d = FF(d, a, b, c, x[9], S12, 0x8b44f7afL); /* 10 */c = FF(c, d, a, b, x[10], S13, 0xffff5bb1L); /* 11 */b = FF(b, c, d, a, x[11], S14, 0x895cd7beL); /* 12 */a = FF(a, b, c, d, x[12], S11, 0x6b901122L); /* 13 */d = FF(d, a, b, c, x[13], S12, 0xfd987193L); /* 14 */c = FF(c, d, a, b, x[14], S13, 0xa679438eL); /* 15 */b = FF(b, c, d, a, x[15], S14, 0x49b40821L); /* 16 *//* Round 2 */a = GG(a, b, c, d, x[1], S21, 0xf61e2562L); /* 17 */d = GG(d, a, b, c, x[6], S22, 0xc040b340L); /* 18 */c = GG(c, d, a, b, x[11], S23, 0x265e5a51L); /* 19 */b = GG(b, c, d, a, x[0], S24, 0xe9b6c7aaL); /* 20 */a = GG(a, b, c, d, x[5], S21, 0xd62f105dL); /* 21 */d = GG(d, a, b, c, x[10], S22, 0x2441453L); /* 22 */c = GG(c, d, a, b, x[15], S23, 0xd8a1e681L); /* 23 */b = GG(b, c, d, a, x[4], S24, 0xe7d3fbc8L); /* 24 */a = GG(a, b, c, d, x[9], S21, 0x21e1cde6L); /* 25 */d = GG(d, a, b, c, x[14], S22, 0xc33707d6L); /* 26 */c = GG(c, d, a, b, x[3], S23, 0xf4d50d87L); /* 27 */b = GG(b, c, d, a, x[8], S24, 0x455a14edL); /* 28 */a = GG(a, b, c, d, x[13], S21, 0xa9e3e905L); /* 29 */d = GG(d, a, b, c, x[2], S22, 0xfcefa3f8L); /* 30 */c = GG(c, d, a, b, x[7], S23, 0x676f02d9L); /* 31 */b = GG(b, c, d, a, x[12], S24, 0x8d2a4c8aL); /* 32 *//* Round 3 */a = HH(a, b, c, d, x[5], S31, 0xfffa3942L); /* 33 */d = HH(d, a, b, c, x[8], S32, 0x8771f681L); /* 34 */c = HH(c, d, a, b, x[11], S33, 0x6d9d6122L); /* 35 */b = HH(b, c, d, a, x[14], S34, 0xfde5380cL); /* 36 */a = HH(a, b, c, d, x[1], S31, 0xa4beea44L); /* 37 */d = HH(d, a, b, c, x[4], S32, 0x4bdecfa9L); /* 38 */c = HH(c, d, a, b, x[7], S33, 0xf6bb4b60L); /* 39 */b = HH(b, c, d, a, x[10], S34, 0xbebfbc70L); /* 40 */a = HH(a, b, c, d, x[13], S31, 0x289b7ec6L); /* 41 */d = HH(d, a, b, c, x[0], S32, 0xeaa127faL); /* 42 */c = HH(c, d, a, b, x[3], S33, 0xd4ef3085L); /* 43 */b = HH(b, c, d, a, x[6], S34, 0x4881d05L); /* 44 */a = HH(a, b, c, d, x[9], S31, 0xd9d4d039L); /* 45 */d = HH(d, a, b, c, x[12], S32, 0xe6db99e5L); /* 46 */c = HH(c, d, a, b, x[15], S33, 0x1fa27cf8L); /* 47 */b = HH(b, c, d, a, x[2], S34, 0xc4ac5665L); /* 48 *//* Round 4 */a = II(a, b, c, d, x[0], S41, 0xf4292244L); /* 49 */d = II(d, a, b, c, x[7], S42, 0x432aff97L); /* 50 */c = II(c, d, a, b, x[14], S43, 0xab9423a7L); /* 51 */b = II(b, c, d, a, x[5], S44, 0xfc93a039L); /* 52 */a = II(a, b, c, d, x[12], S41, 0x655b59c3L); /* 53 */d = II(d, a, b, c, x[3], S42, 0x8f0ccc92L); /* 54 */c = II(c, d, a, b, x[10], S43, 0xffeff47dL); /* 55 */b = II(b, c, d, a, x[1], S44, 0x85845dd1L); /* 56 */a = II(a, b, c, d, x[8], S41, 0x6fa87e4fL); /* 57 */d = II(d, a, b, c, x[15], S42, 0xfe2ce6e0L); /* 58 */c = II(c, d, a, b, x[6], S43, 0xa3014314L); /* 59 */b = II(b, c, d, a, x[13], S44, 0x4e0811a1L); /* 60 */a = II(a, b, c, d, x[4], S41, 0xf7537e82L); /* 61 */d = II(d, a, b, c, x[11], S42, 0xbd3af235L); /* 62 */c = II(c, d, a, b, x[2], S43, 0x2ad7d2bbL); /* 63 */b = II(b, c, d, a, x[9], S44, 0xeb86d391L); /* 64 */state[0] += a;state[1] += b;state[2] += c;state[3] += d;}/** Encode把long数组按顺序拆成byte数组，因为java的long类型是64bit的， 只拆低32bit，以适应原始C实现的用途*/private void Encode(byte[] output, long[] input, int len) {int i, j;for (i = 0, j = 0; j < len; i++, j += 4) {output[j] = (byte) (input[i] & 0xffL);output[j + 1] = (byte) ((input[i] >>> 8) & 0xffL);output[j + 2] = (byte) ((input[i] >>> 16) & 0xffL);output[j + 3] = (byte) ((input[i] >>> 24) & 0xffL);}}/** Decode把byte数组按顺序合成成long数组，因为java的long类型是64bit的，* 只合成低32bit，高32bit清零，以适应原始C实现的用途*/private void Decode(long[] output, byte[] input, int len) {int i, j;for (i = 0, j = 0; j < len; i++, j += 4)output[i] = b2iu(input[j]) | (b2iu(input[j + 1]) << 8)| (b2iu(input[j + 2]) << 16) | (b2iu(input[j + 3]) << 24);return;}/** b2iu是我写的一个把byte按照不考虑正负号的原则的＂升位＂程序，因为java没有unsigned运算*/private static long b2iu(byte b) {return b < 0 ? b & 0x7F + 128 : b;}/** byteHEX()，用来把一个byte类型的数转换成十六进制的ASCII表示，* 因为java中的byte的toString无法实现这一点，我们又没有C语言中的 sprintf(outbuf,"%02X",ib)*/private static String byteHEX(byte ib) {char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A','B', 'C', 'D', 'E', 'F' };char[] ob = new char[2];ob[0] = Digit[(ib >>> 4) & 0X0F];ob[1] = Digit[ib & 0X0F];String s = new String(ob);return s;}public static void main(String args[]) {String source = "888888";MD5 md5 = new MD5();String s1 = md5.getMD5ofStr(source);// length=32System.out.println(s1);}
}
PageBean.java
package com.tang.util;import java.util.HashMap;
import java.util.Map;import javax.servlet.http.HttpServletRequest;/*** 分页工具类*/
public class PageBean {private int page = 1;// 页码private int rows = 10;// 页大小private int total = 0;// 总记录数private boolean pagination = true;// 是否分页//	保存上一次请求的所有参数private Map<String, String[]> paMap = new HashMap<>();//	保存上一次请求的Urlprivate String url;public void setRequest(HttpServletRequest req) {this.setPage(req.getParameter("page"));this.setRows(req.getParameter("rows"));this.setPagination(req.getParameter("pagination"));
//		重要this.setPaMap(req.getParameterMap());this.setUrl(req.getRequestURL().toString());}private void setPagination(String pagination) {if (StringUtils.isNotBlank(pagination))this.pagination = !"false".equals(pagination);}private void setRows(String rows) {if (StringUtils.isNotBlank(rows))this.rows = Integer.valueOf(rows);}private void setPage(String page) {if (StringUtils.isNotBlank(page))this.page = Integer.valueOf(page);}public Map<String, String[]> getPaMap() {return paMap;}public void setPaMap(Map<String, String[]> paMap) {this.paMap = paMap;}public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public PageBean() {super();}public int getPage() {return page;}public void setPage(int page) {this.page = page;}public int getRows() {return rows;}public void setRows(int rows) {this.rows = rows;}public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public void setTotal(String total) {this.total = Integer.parseInt(total);}public boolean isPagination() {return pagination;}public void setPagination(boolean pagination) {this.pagination = pagination;}public int getStartIndex() {return (this.page - 1) * this.rows;}public int getMaxPage() {return this.total % this.rows == 0 ? this.total / this.rows : this.total / this.rows + 1;}//	上一页public int getPrevPage() {return this.page > 1 ? this.page - 1 : this.page;}//	下一页public int getNextPage() {return this.page < getMaxPage() ? this.page + 1 : this.page;}@Overridepublic String toString() {return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination + "]";}}
PinYinUtil.java
package com.tang.util;import java.util.regex.Pattern;import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;/*** 拼音工具类，能将汉字转换成拼音的首字母*/
public class PinYinUtil {// 名字长度private static int NAME_LENGTH = 3;/*** 将首个汉字转换为全拼* 其他是汉字首字母* @param src* @return*/public static String getPingYin(String src) {char[] name = src.toCharArray();String[] newName = new String[name.length];HanyuPinyinOutputFormat pyFormat = new HanyuPinyinOutputFormat();pyFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);pyFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);pyFormat.setVCharType(HanyuPinyinVCharType.WITH_V);String account = "";int length = name.length;try {// 名字大于等于3个字的时候，姓取全称,名取首字母。if(length>=NAME_LENGTH){for (int i = 0; i < length; i++) {// 截取姓if(i==0){// 判断是否为汉字字符if (Character.toString(name[i]).matches("[\\u4E00-\\u9FA5]+")) {newName = PinyinHelper.toHanyuPinyinStringArray(name[i], pyFormat);account += newName[0];} elseaccount += Character.toString(name[i]);}else{account += getPinYinHeadChar(Character.toString(name[i]));}}}else{// 只有2个字的名字,账号是名字的拼音全称for (int i = 0; i < length; i++) {// 判断是否为汉字字符if (Character.toString(name[i]).matches("[\\u4E00-\\u9FA5]+")) {newName = PinyinHelper.toHanyuPinyinStringArray(name[i], pyFormat);account += newName[0];} elseaccount += Character.toString(name[i]);}}return account;} catch (BadHanyuPinyinOutputFormatCombination e1) {e1.printStackTrace();}return account;}/*** 全部汉字转换成拼音* @param src* @return*/public static String getAllPingYin(String src) {StringBuffer sb = new StringBuffer();String [] arr = src.split("");for (String s : arr) {sb.append(PinYinUtil.getPingYin(s));}return sb.toString();}/*** 返回中文的首字母* @param str* @return*/public static String getPinYinHeadChar(String str) {String convert = "";for (int j = 0; j < str.length(); j++) {char word = str.charAt(j);String[] pinyinArray = PinyinHelper.toHanyuPinyinStringArray(word);if (pinyinArray != null) {convert += pinyinArray[0].charAt(0);} else {convert += word;}}return convert;}public static void main(String[] args) {String cn = "保存并插入数据库";System.out.println(PinYinUtil.getAllPingYin(cn));System.out.println(PinYinUtil.getPingYin(cn));System.out.println(PinYinUtil.getPinYinHeadChar(cn));}
}
PropertiesUtil.java
package com.tang.util;import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;/*** properties工具类* @author user**/
public class PropertiesUtil {/*** 根据key获取value值* @param key* @return*/public static String getValue(String key){Properties prop=new Properties();InputStream in=new PropertiesUtil().getClass().getResourceAsStream("/resources.properties");try {prop.load(in);} catch (IOException e) {e.printStackTrace();}return prop.getProperty(key);}
}
ResponseUtil.java
package com.tang.util;import com.fasterxml.jackson.databind.ObjectMapper;import java.io.PrintWriter;import javax.servlet.http.HttpServletResponse;public class ResponseUtil {public static void write(HttpServletResponse response,Object o)throws Exception{response.setContentType("text/html;charset=utf-8");PrintWriter out=response.getWriter();out.println(o.toString());out.flush();out.close();}public static void writeJson(HttpServletResponse response,Object o)throws Exception{ObjectMapper om = new ObjectMapper();write(response,om.writeValueAsString(o));}
}
StringUtils.java
package com.tang.util;public class StringUtils {// 私有的构造方法，保护此类不能在外部实例化private StringUtils() {}/*** 如果字符串等于null或去空格后等于""，则返回true，否则返回false* * @param s* @return*/public static boolean isBlank(String s) {boolean b = false;if (null == s || s.trim().equals("")) {b = true;}return b;}/*** 如果字符串不等于null或去空格后不等于""，则返回true，否则返回false* * @param s* @return*/public static boolean isNotBlank(String s) {return !isBlank(s);}}
config.properties
#oracle9i
#driver=oracle.jdbc.driver.OracleDriver
#url=jdbc:oracle:thin:@localhost:1521:ora9
#user=test
#pwd=test#sql2005
#driver=com.microsoft.sqlserver.jdbc.SQLServerDriver
#url=jdbc:sqlserver://localhost:1423;DatabaseName=test
#user=sa
#pwd=sa#sql2000
#driver=com.microsoft.jdbc.sqlserver.SQLServerDriver
#url=jdbc:microsoft:sqlserver://localhost:1433;databaseName=unit6DB
#user=sa
#pwd=888888#mysql5
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/tangxinlian?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false
user=root
pwd=

tag包

PageTag 分页
package com.tang.tag;import java.io.IOException;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyTagSupport;import com.tang.util.PageBean;public class PageTag extends BodyTagSupport{private static final long serialVersionUID = -8012081268314346782L;private PageBean pageBean;public PageBean getPageBean() {return pageBean;}public void setPageBean(PageBean pageBean) {this.pageBean = pageBean;}@Overridepublic int doStartTag() throws JspException {JspWriter out = pageContext.getOut();try {out.print(toHTML());} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return super.doStartTag();}private String toHTML() {StringBuilder sb = new StringBuilder();
//      上一次查询的from表单的html拼接sb.append("<form id='pageBeanForm' action='"+pageBean.getUrl()+"' method='post'>");
//      查第几页的数据sb.append("<input type='hidden' name='page'>");
//      重要设置拼接操作，将上一次请求参数携带到下一次Map<String, String[]> parameterMap = pageBean.getPaMap();if(parameterMap.size()>0){Set<Entry<String,String[]>> entrySet = parameterMap.entrySet();for (Entry<String, String[]> entry : entrySet) {if(!"page".equals(entry.getKey())){for (String val : entry.getValue()) {sb.append("<input type='hidden' name='"+entry.getKey()+"' value='"+val+"'>");}}}}sb.append("</form>");//		默认展示前面4页，当前页，后面5页int page = pageBean.getPage();int max = pageBean.getMaxPage();int before = page > 4 ? 4 : page-1;int after = 10 - 1 - before;//5after = max - page > after ? after : max-page;
//      用来控制上一页的点击按钮特效的boolean startFlag = page > 1;
//      用来控制下一页的点击按钮特效的boolean endFlag = page < max;//      拼接分页条sb.append("<ul class='pagination'>");sb.append("<li class='page-item "+(startFlag ? "" : "")+"'><a class='page-link' href='javascript:gotoPage(1)'>首页</a></li>");sb.append("<li class='page-item "+(startFlag ? "" : "")+"'><a class='page-link' href='javascript:gotoPage("+pageBean.getPrevPage()+")'>&lt;</a></li>");//      代表了当前页的前4页for (int i = before; i > 0 ; i--) {sb.append("<li class='page-item'><a class='page-link' href='javascript:gotoPage("+(page-i)+")'>"+(page-i)+"</a></li>");}sb.append("<li class='page-item active'><a class='page-link' href='javascript:gotoPage("+pageBean.getPage()+")'>"+pageBean.getPage()+"</a></li>");//      代表了当前页的后5页for (int i = 1; i <= after; i++) {sb.append("<li class='page-item'><a class='page-link' href='javascript:gotoPage("+(page+i)+")'>"+(page+i)+"</a></li>");}sb.append("<li class='page-item "+(endFlag ? "" : "")+"'><a class='page-link' href='javascript:gotoPage("+pageBean.getNextPage()+")'>&gt;</a></li>");sb.append("<li class='page-item "+(endFlag ? "" : "")+"'><a class='page-link' href='javascript:gotoPage("+pageBean.getMaxPage()+")'>尾页</a></li>");sb.append("<li class='page-item go-input'><b>到第</b><input class='page-link' type='text' id='skipPage' name='' /><b>页</b></li>");sb.append("<li class='page-item go'><a class='page-link' href='javascript:skipPage()'>确定</a></li>");sb.append("<li class='page-item'><b>共"+pageBean.getTotal()+"条</b></li>");sb.append("</ul>");//      拼接分页的js代码sb.append("<script type='text/javascript'>");sb.append("function gotoPage(page) {");sb.append("document.getElementById('pageBeanForm').page.value = page;");sb.append("document.getElementById('pageBeanForm').submit();");sb.append("}");sb.append("function skipPage() {");sb.append("var page = document.getElementById('skipPage').value;");sb.append("if (!page || isNaN(page) || parseInt(page) < 1 || parseInt(page) > "+max+") {");sb.append("alert('请输入1~N的数字');");sb.append("return;");sb.append("}");sb.append("gotoPage(page);");sb.append("}");sb.append("</script>");return sb.toString();}}

要把PageTag分页配置到 zking.tld 中

<?xml version="1.0" encoding="UTF-8" ?><taglib xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"version="2.0"><description>zking 1.1 core library</description><display-name>zking core</display-name><tlib-version>1.1</tlib-version><short-name>z</short-name><uri>/zking</uri><tag><name>page</name><tag-class>com.tang.tag.PageTag</tag-class><body-content>JSP</body-content><attribute><name>pageBean</name><required>true</required><rtexprvalue>true</rtexprvalue></attribute></tag>
</taglib>

vo包

TreeVo
package com.tang.vo;import java.util.ArrayList;
import java.util.List;
import java.util.Map;public class TreeVo<T> {/*** 节点ID*/private String id;/*** 显示节点文本*/private String text;/*** 节点状态，open closed*/private Map<String, Object> state;/*** 节点是否被选中 true false*/private boolean checked = false;/*** 节点属性*/private Map<String, Object> attributes;/*** 节点的子节点*/private List<TreeVo<T>> children = new ArrayList<TreeVo<T>>();/*** 父ID*/private String parentId;/*** 是否有父节点*/private boolean hasParent = false;/*** 是否有子节点*/private boolean hasChildren = false;public String getId() {return id;}public void setId(String id) {this.id = id;}public String getText() {return text;}public void setText(String text) {this.text = text;}public Map<String, Object> getState() {return state;}public void setState(Map<String, Object> state) {this.state = state;}public boolean isChecked() {return checked;}public void setChecked(boolean checked) {this.checked = checked;}public Map<String, Object> getAttributes() {return attributes;}public void setAttributes(Map<String, Object> attributes) {this.attributes = attributes;}public List<TreeVo<T>> getChildren() {return children;}public void setChildren(List<TreeVo<T>> children) {this.children = children;}public boolean isHasParent() {return hasParent;}public void setHasParent(boolean isParent) {this.hasParent = isParent;}public boolean isHasChildren() {return hasChildren;}public void setChildren(boolean isChildren) {this.hasChildren = isChildren;}public String getParentId() {return parentId;}public void setParentId(String parentId) {this.parentId = parentId;}public TreeVo(String id, String text, Map<String, Object> state, boolean checked, Map<String, Object> attributes,List<TreeVo<T>> children, boolean isParent, boolean isChildren, String parentID) {super();this.id = id;this.text = text;this.state = state;this.checked = checked;this.attributes = attributes;this.children = children;this.hasParent = isParent;this.hasChildren = isChildren;this.parentId = parentID;}public TreeVo() {super();}}

今天先把网上书城项目中所需要的jar包及工具类写好，明天就写登录注册及书籍管理功能，加油！！！

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