• 自定义mvc框架复习

    目录

    一、搭建自定义mvc框架的环境

    导入jar包

     导入框架配套的工具类

     导入框架的配置文件

    配置web.xml

    二、完成实体类与数据库表的映射

    三、Dao层的编写

    四、web层

    哈喽大家好！！！今天就和大家一起来给自定义mvc框架进行一个收尾工作吧！！！

    一、搭建自定义mvc框架的环境

    导入jar包

     导入框架配套的工具类

    com.zking.util工具类

    BaseDao： 

    1. package com.zking.util;
    2.  
    3. import java.lang.reflect.Field;
    4. import java.sql.Connection;
    5. import java.sql.PreparedStatement;
    6. import java.sql.ResultSet;
    7. import java.util.ArrayList;
    8. import java.util.List;
    9.  
    10. import com.zking.entity.Book;
    11. import com.zking.util.DBAccess;
    12. import com.zking.util.PageBean;
    13. import com.zking.util.StringUtils;
    14.  
    15. /**
    16.  * 所有Dao层的父类
    17.  * 	BookDao
    18.  * 	UserDao
    19.  * 	OrderDao
    20.  * 	...
    21.  * @author Administrator
    22.  *
    23.  * @param 
    24.  */
    25. public class BaseDao {
    26. 	/**
    27. 	 * 通用的增删改方法
    28. 	 * @param book
    29. 	 * @throws Exception
    30. 	 */
    31. 	public void executeUpdate(String sql, T t, String[] attrs) throws Exception {
    32. //		String[] attrs = new String[] {"bid", "bname", "price"};
    33. 		Connection con = DBAccess.getConnection();
    34. 		PreparedStatement pst = con.prepareStatement(sql);
    35. //		pst.setObject(1, book.getBid());
    36. //		pst.setObject(2, book.getBname());
    37. //		pst.setObject(3, book.getPrice());
    38. 		/*
    39. 		 * 思路：
    40. 		 * 	1.从传进来的t中读取属性值
    41. 		 *  2.往预定义对象中设置了值
    42. 		 *  
    43. 		 *  t->book
    44. 		 *  f->bid
    45. 		 */
    46. 		for (int i = 0; i < attrs.length; i++) {
    47. 			Field f = t.getClass().getDeclaredField(attrs[i]);
    48. 			f.setAccessible(true);
    49. 			pst.setObject(i+1, f.get(t));
    50. 		}
    51. 		pst.executeUpdate();
    52. 	}
    53. 	
    54. 	/**
    55. 	 * 通用分页查询
    56. 	 * @param sql
    57. 	 * @param clz
    58. 	 * @return
    59. 	 * @throws Exception
    60. 	 */
    61. 	public List executeQuery(String sql,Class clz,PageBean pageBean) throws Exception{
    62. 		List list = new ArrayList();
    63. 		Connection con = DBAccess.getConnection();;
    64. 		PreparedStatement pst = null;
    65. 		ResultSet rs = null;
    66. 		
    67. 		/*
    68. 		 * 是否需要分页？
    69. 		 * 	无需分页（项目中的下拉框，查询条件教员下拉框，无须分页）	
    70. 		 * 	必须分页（项目中列表类需求、订单列表、商品列表、学生列表...）
    71. 		 */
    72. 		if(pageBean != null && pageBean.isPagination()) {
    73. //			必须分页（列表需求）
    74. 			String countSQL = getCountSQL(sql);
    75. 			pst = con.prepareStatement(countSQL);
    76. 			rs = pst.executeQuery();
    77. 			if(rs.next()) {
    78. 				pageBean.setTotal(String.valueOf(rs.getObject(1)));
    79. 			}
    80. 			
    81. //			挪动到下面，是因为最后才处理返回的结果集
    82. //			-- sql=SELECT * FROM t_mvc_book WHERE bname like '%圣墟%'
    83. //			-- pageSql=sql limit (page-1)*rows,rows 	对应某一页的数据
    84. //			-- countSql=select count(1) from (sql) t 	符合条件的总记录数
    85. 			String pageSQL = getPageSQL(sql,pageBean);//符合条件的某一页数据
    86. 			pst = con.prepareStatement(pageSQL);
    87. 			rs = pst.executeQuery();
    88. 		}else {
    89. //			不分页（select需求）
    90. 			pst = con.prepareStatement(sql);//符合条件的所有数据
    91. 			rs = pst.executeQuery();
    92. 		}
    93. 		
    94. 		
    95. 		while (rs.next()) {
    96. 			T t = clz.newInstance();
    97. 			Field[] fields = clz.getDeclaredFields();
    98. 			for (Field f : fields) {
    99. 				f.setAccessible(true);
    100. 				f.set(t, rs.getObject(f.getName()));
    101. 			}
    102. 			list.add(t);
    103. 		}
    104. 		return list;
    105. 	}
    106.  
    107. 	/**
    108. 	 * 将原生SQL转换成符合条件的总记录数countSQL
    109. 	 * @param sql
    110. 	 * @return
    111. 	 */
    112. 	private String getCountSQL(String sql) {
    113. //		-- countSql=select count(1) from (sql) t 	符合条件的总记录数
    114. 		return "select count(1) from ("+sql+") t";
    115. 	}
    116.  
    117. 	/**
    118. 	 * 将原生SQL转换成pageSQL
    119. 	 * @param sql
    120. 	 * @param pageBean
    121. 	 * @return
    122. 	 */
    123. 	private String getPageSQL(String sql,PageBean pageBean) {
    124. //		(this.page - 1) * this.rows
    125. //		pageSql=sql limit (page-1)*rows,rows
    126. 		return sql + " limit "+ pageBean.getStartIndex() +","+pageBean.getRows();
    127. 	}
    128. }

    PageBean.java 

    1. package com.zking.util;
    2.  
    3. import java.util.HashMap;
    4. import java.util.Map;
    5.  
    6. import javax.servlet.http.HttpServletRequest;
    7.  
    8. /**
    9.  * 分页工具类
    10.  *
    11.  */
    12. public class PageBean {
    13.  
    14. 	private int page = 1;// 页码
    15.  
    16. 	private int rows = 10;// 页大小
    17.  
    18. 	private int total = 0;// 总记录数
    19.  
    20. 	private boolean pagination = true;// 是否分页
    21. 	
    22. 	private String url; //保存上一次请求的URL
    23. 	
    24. 	private Map paramMap = new HashMap<>();// 保存上一次请求的参数
    25. 	
    26. 	/**
    27. 	 * 初始化pagebean的，保存上一次请求的重要参数
    28. 	 * @param req
    29. 	 */
    30. 	public void setRequest(HttpServletRequest req) {
    31. //		1.1	需要保存上一次请求的URL
    32. 		this.setUrl(req.getRequestURL().toString());
    33. //		1.2	需要保存上一次请求的参数	bname、price
    34. 		this.setParamMap(req.getParameterMap());
    35. //		1.3	需要保存上一次请求的分页设置	pagination
    36. 		this.setPagination(req.getParameter("pagination"));
    37. //		1.4	需要保存上一次请求的展示条目数
    38. 		this.setRows(req.getParameter("rows"));
    39. //		1.5  初始化请求的页码	page
    40. 		this.setPage(req.getParameter("page"));
    41. 	}
    42. 	
    43. 	public void setPage(String page) {
    44. 		if(StringUtils.isNotBlank(page))
    45. 			this.setPage(Integer.valueOf(page));
    46. 	}
    47.  
    48. 	public void setRows(String rows) {
    49. 		if(StringUtils.isNotBlank(rows))
    50. 			this.setRows(Integer.valueOf(rows));
    51. 	}
    52.  
    53. 	public void setPagination(String pagination) {
    54. //		只有在前台jsp填写了pagination=false，才代表不分页
    55. 		if(StringUtils.isNotBlank(pagination))
    56. 			this.setPagination(!"false".equals(pagination));
    57. 	}
    58.  
    59.  
    60. 	public String getUrl() {
    61. 		return url;
    62. 	}
    63.  
    64. 	public void setUrl(String url) {
    65. 		this.url = url;
    66. 	}
    67.  
    68. 	public Map getParamMap() {
    69. 		return paramMap;
    70. 	}
    71.  
    72. 	public void setParamMap(Map paramMap) {
    73. 		this.paramMap = paramMap;
    74. 	}
    75.  
    76.  
    77.  
    78. 	public PageBean() {
    79. 		super();
    80. 	}
    81.  
    82. 	public int getPage() {
    83. 		return page;
    84. 	}
    85.  
    86. 	public void setPage(int page) {
    87. 		this.page = page;
    88. 	}
    89.  
    90. 	public int getRows() {
    91. 		return rows;
    92. 	}
    93.  
    94. 	public void setRows(int rows) {
    95. 		this.rows = rows;
    96. 	}
    97.  
    98. 	public int getTotal() {
    99. 		return total;
    100. 	}
    101.  
    102. 	public void setTotal(int total) {
    103. 		this.total = total;
    104. 	}
    105.  
    106. 	public void setTotal(String total) {
    107. 		this.total = Integer.parseInt(total);
    108. 	}
    109.  
    110. 	public boolean isPagination() {
    111. 		return pagination;
    112. 	}
    113.  
    114. 	public void setPagination(boolean pagination) {
    115. 		this.pagination = pagination;
    116. 	}
    117.  
    118. 	/**
    119. 	 * 获得起始记录的下标
    120. 	 * 
    121. 	 * @return
    122. 	 */
    123. 	public int getStartIndex() {
    124. 		return (this.page - 1) * this.rows;
    125. 	}
    126. 	
    127. 	/**
    128. 	 * 最大页
    129. 	 * @return
    130. 	 */
    131. 	public int maxPage() {
    132. //		total % rows == 0 ? total / rows : total / rows +1
    133. 		return this.total % this.rows == 0 ? this.total / this.rows : this.total / this.rows + 1;
    134. 	}
    135. 	
    136. 	/**
    137. 	 * 下一页
    138. 	 * @return
    139. 	 */
    140. 	public int nextPage() {
    141. //		如果当前页小于最大页，那就下一页为当前页+1；如果不小于，说明当前页就是最大页，那就无需+1
    142. 		return this.page < this.maxPage() ? this.page + 1 : this.page;
    143. 	}
    144. 	
    145. 	/**
    146. 	 * 上一页
    147. 	 * @return
    148. 	 */
    149. 	public int previousPage() {
    150. 		return this.page > 1 ? this.page - 1 : this.page;
    151. 	}
    152.  
    153. 	@Override
    154. 	public String toString() {
    155. 		return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination + "]";
    156. 	}
    157.  
    158. }

     导入框架的配置文件

    mvc.xml

    2. <config>
    3. 	
    4. 	
    5.  
    6. 	<action path="/permission" type="com.zking.web.PermissionAction">
    7. 		<forward name="list" path="/index.jsp" redirect="false" />
    8. 		<forward name="xg" path="/update.jsp" redirect="false" />
    9. 		<forward name="tolist" path="/permission.action?methodName=list" redirect="true" />
    10. 		<forward name="add" path="/add.jsp" redirect="false" />
    11. 		<forward name="ck" path="/ck.jsp" redirect="false" />
    12. 		
    13. 		
    14. 	action>
    15. 	
    16.  
    17. config>

    配置web.xml

    2. <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
    3.   <display-name>cs02display-name>
    4.   <servlet>
    5.   	<servlet-name>mvcservlet-name>
    6.   	<servlet-class>com.zking.framework.DispatchServletservlet-class>
    7.   	<init-param>
    8.   		<param-name>configurationLocationparam-name>
    9.   		<param-value>/mvc.xmlparam-value>
    10.   	init-param>
    11.   servlet>
    12.   <servlet-mapping>
    13.   	<servlet-name>mvcservlet-name>
    14.   	<url-pattern>*.actionurl-pattern>
    15.   servlet-mapping>
    16.   
    17.  
    18. web-app>

    二、完成实体类与数据库表的映射

    注意：数据库列段的数据类型，要与属性的类型一致
    varchar->String
    bigInt->Long
    int->int
    datetime->java.util.date

    Permission

    1. package com.zking.entity;
    2.  
    3. public class Blog {
    4. 	private int id;
    5. 	private String title;
    6. 	private String keyWord;
    7. 	public int getId() {
    8. 		return id;
    9. 	}
    10. 	public void setId(int id) {
    11. 		this.id = id;
    12. 	}
    13. 	public String getTitle() {
    14. 		return title;
    15. 	}
    16. 	public void setTitle(String title) {
    17. 		this.title = title;
    18. 	}
    19. 	public String getKeyWord() {
    20. 		return keyWord;
    21. 	}
    22. 	public void setKeyWord(String keyWord) {
    23. 		this.keyWord = keyWord;
    24. 	}
    25. 	@Override
    26. 	public String toString() {
    27. 		return "Blog [id=" + id + ", title=" + title + ", keyWord=" + keyWord + "]";
    28. 	}
    29. 	
    30. }

    三、Dao层的编写

    PermissionDao

    1. package com.zking.dao;
    2.  
    3. import java.util.List;
    4.  
    5. import com.zking.entity.Permission;
    6. import com.zking.util.BaseDao;
    7. import com.zking.util.PageBean;
    8. /**
    9.  * 继承BaseDao的原因：
    10.  * 1.封装通用查询
    11.  * 2.封装通用增删改
    12.  * @author Administrator
    13.  *
    14.  */
    15. public class PermissionDao extends BaseDao{
    16. 	//查询
    17. 	public List list(Permission t, PageBean pageBean) throws Exception {
    18. 		String sql = "select * from t_easyui_permission where 1=1";
    19. 		return super.executeQuery(sql, Permission.class, pageBean);
    20. 	}
    21. 	
    22. /*	//模糊查询
    23. 		public List mh(Permission t, PageBean pageBean) throws Exception {
    24. 			String sql = "select * from t_easyui_permission where ";
    25. 			return super.executeQuery(sql, Permission.class, pageBean);
    26. 		}
    27. 	
    28. 	*/
    29. 	
    30. 	//查询
    31. 		public List dg(Permission t, PageBean pageBean) throws Exception {
    32. 			String sql = "select * from t_easyui_permission where 1=1";
    33. 			long id = t.getId();
    34. 			if(id!=0) {
    35. 				sql +=" and id="+id;
    36. 			}
    37. 			return super.executeQuery(sql, Permission.class, pageBean);
    38. 		}
    39. 	
    40. 	//增加
    41. 	
    42. 	public int add( Permission t) throws Exception {
    43. 		
    44. 		String sql ="insert into t_easyui_permission(name,description,url,pid,ismenu,displayno) values(?,?,?,?,?,?)";
    45. 		return super.executeUpdate(sql, t, new String [] {"name","description","url","pid","ismenu","displayno"} );
    46. 	}
    47. 	
    48. 	//修改
    49. 		public int  update( Permission t) throws Exception {
    50. 			
    51. 			String sql ="update t_easyui_permission set name=?,description=?,url=?,pid=?,ismenu=?,displayno=? where id = ?";
    52. 			return super.executeUpdate(sql, t, new String [] {"name","description","url","pid","ismenu","displayno","id"} );
    53. 		}
    54. 		
    55. 			//删除
    56. 		public int  delete( Permission t) throws Exception {
    57. 			
    58. 			String sql ="delete from t_easyui_permission where id = ?";
    59. 			return super.executeUpdate(sql, t, new String [] {"id"} );
    60. 		}
    61. 			
    62.  
    63. }

    四、web层

    PermissionAction :

    1. package com.zking.web;
    2.  
    3. import java.util.List;
    4.  
    5. import javax.servlet.http.HttpServletRequest;
    6. import javax.servlet.http.HttpServletResponse;
    7.  
    8. import com.zking.dao.PermissionDao;
    9. import com.zking.entity.Permission;
    10. import com.zking.framework.ActionSupport;
    11. import com.zking.framework.ModelDriver;
    12. import com.zking.util.PageBean;
    13.  
    14. public class PermissionAction extends ActionSupport implements ModelDriver<Permission>{
    15.  
    16. 	
    17. 	private Permission per = new Permission();
    18. 	private PermissionDao perbao = new PermissionDao();
    19. 	@Override
    20. 	public Permission getModel() {
    21. 		return per;
    22. 	}
    23. 	
    24. 	//查询
    25. 	public String list(HttpServletRequest req, HttpServletResponse resp) {
    26. 		try {
    27. 			//分页
    28. //			PageBean pageBean = new PageBean();
    29. //			//初始化
    30. //			pageBean.setRequest(req);
    31. 			List<Permission> list = perbao.list(per, null);
    32. 			req.setAttribute("list", list);
    33. //			req.setAttribute("pageBean", pageBean);
    34. 		} catch (Exception e) {
    35. 			e.printStackTrace();		
    36. 		}
    37. 		return "list";
    38. 	}
    39. 	
    40. 	
    41. 	
    42. 	//增加/修改需要跳转编辑界面
    43. 		public String tolist(HttpServletRequest req, HttpServletResponse resp) {
    44. 			try {
    45. 				 long id = per.getId();
    46. 				 Permission p = perbao.dg(per, null).get(0);
    47. 				 req.setAttribute("p", p);
    48. 				 if(id!=0) {
    49. 					 return "xg";
    50. 				 }
    51. 			} catch (Exception e) {
    52. 				e.printStackTrace();		
    53. 			}
    54. 			return "add";
    55. 		}
    56. 	
    57. 		
    58. 		public String ck(HttpServletRequest req, HttpServletResponse resp) {
    59. 			try {
    60. 				 Permission p = perbao.dg(per, null).get(0);
    61. 				 req.setAttribute("p", p);
    62. 			} catch (Exception e) {
    63. 				e.printStackTrace();		
    64. 			}
    65. 			return "ck";
    66. 		}
    67. 	
    68. 	
    69.  
    70. 	//增加
    71. 	public String add(HttpServletRequest req, HttpServletResponse resp) {
    72. 		try {
    73. 			 perbao.add(per);
    74. 		} catch (Exception e) {
    75. 			e.printStackTrace();		
    76. 		}
    77. 		return "tolist";
    78. 	}
    79. 	
    80. 	
    81. 	//修改
    82. 		public String update(HttpServletRequest req, HttpServletResponse resp) {
    83. 			try {
    84. 				 perbao.update(per);
    85. 			} catch (Exception e) {
    86. 				e.printStackTrace();		
    87. 			}
    88. 			return "xg";
    89. 		}
    90. 	
    91. 	//删除
    92. 	public String delete(HttpServletRequest req, HttpServletResponse resp) {
    93. 		try {
    94. 			 int i = perbao.delete(per);
    95. 			 System.out.println(i);
    96. 		} catch (Exception e) {
    97. 			e.printStackTrace();		
    98. 		}
    99. 		return "tolist";
    100. 	}
    101. 				
    102. 				
    103. 	
    104.  
    105.  
    106. }

    五，jsp界面

    index.jsp

    1. <%@ page language="java" contentType="text/html; charset=UTF-8"
    2.     pageEncoding="UTF-8"%>
    3.     
    4.     <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
    5. html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    6. <html>
    7. <head>
    8.  
    9. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    10. <title>Insert title heretitle>
    11. head>
    12. 	<h2>主界面h2>
    13. 	<form action="${pageContext.request.contextPath }/permission.action?methodName=list" method="post">
    14. 	<a href="">a>
    15. 	
    16. 	<table border="1px">
    17. 	<tr>
    18. 		<td>idtd>
    19. 		<td>菜单名td>
    20. 		<td>描述td>
    21. 		<td>点击菜单的界面td>
    22. 		<td>父级菜单的idtd>
    23. 		<td>菜单/按钮td>
    24. 		<td>显示的顺序td>
    25. 		<td>操作<a href="add.jsp">增加a>td>
    26. 	
    27. 	tr>
    28. 	<c:forEach items="${list }" var = "c">
    29. 	<tr>
    30. 		<td>${c.id}td>
    31. 		<td>${c.name}td>
    32. 		<td>${c.description}td>
    33. 		<td>${c.url}td>
    34. 		<td>${c.pid}td>
    35. 		<td>${c.ismenu}td>
    36. 		<td>${c.displayno}td>
    37. 		<td><a href="${pageContext.request.contextPath }/permission.action?methodName=delete&id=${c.id}">删除a>td> 
    38. 		<td><a href="${pageContext.request.contextPath }/permission.action?methodName=ck&id=${c.id}">查看a>td>
    39. 		<td><a href="${pageContext.request.contextPath }/permission.action?methodName=tolist&id=${c.id}">修改a>td>
    40. 	tr>
    41. 	
    42. 	
    43. 	
    44. 	c:forEach>
    45. 	
    46. 	
    47. 	table>
    48. 	
    49. 	
    50. 	form>
    51.  
    52.  
    53. body>
    54. html>

    add.jsp

    1. <%@ page language="java" contentType="text/html; charset=UTF-8"
    2.     pageEncoding="UTF-8"%>
    3. html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    4. <html>
    5. <head>
    6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    7. <title>Insert title heretitle>
    8. head>
    9. <body>
    10. 	<form action="${pageContext.request.contextPath }/permission.action?methodName=add" method="post">
    11. 	<table border="1px">
    12. 	<tr>
    13. 		<td>名称：td>
    14. 		<td><input type="text" name = "name">td>
    15. 	tr>
    16. 	<tr>
    17. 		<td>描述:td>
    18. 		<td><input type="text" name = "description">td>
    19. 	tr>
    20. 	<tr>
    21. 		<td>点击菜单的界面：td>
    22. 		<td><input type="text" name = "url">td>
    23. 	tr>
    24. 	<tr>
    25. 		<td>父级菜单的id：td>
    26. 		<td><input type="text" name = "pid">td>
    27. 	tr>
    28. 	<tr>
    29. 		<td>菜单/按钮：td>
    30. 		<td><input type="text" name = "ismenu">td>
    31. 	tr>
    32. 	
    33. 	<tr>
    34. 		<td>显示的顺序：td>
    35. 		<td><input type="text" name = "displayno">td>
    36. 	tr>
    37. 	
    38. 	
    39. 	table>
    40. 	<input type="submit" value="提交">
    41. 	<a href="/permission.action?methodName=list">返回a>
    42. 	
    43. 	
    44. 	
    45. 	form>
    46.  
    47. body>
    48. html>

    ck.jsp

    1. <%@ page language="java" contentType="text/html; charset=UTF-8"
    2.     pageEncoding="UTF-8"%>
    3. html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    4. <html>
    5. <head>
    6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    7. <title>Insert title heretitle>
    8. head>
    9. <body>
    10. 	<form action="${pageContext.request.contextPath }/permission.action?methodName=update" method="post">
    11. 	<table border="1px">
    12. 	<tr>
    13. 		<td>名称：td>
    14. 		<td><input type="text" name = "name" value="${p.name }">td>
    15. 	tr>
    16. 	<tr>
    17. 		<td>描述:td>
    18. 		<td><input type="text" name = "description" value="${p.description }">td>
    19. 	tr>
    20. 	<tr>
    21. 		<td>点击菜单的界面：td>
    22. 		<td><input type="text" name = "url" value="${p.url }">td>
    23. 	tr>
    24. 	<tr>
    25. 		<td>父级菜单的id：td>
    26. 		<td><input type="text" name = "pid" value="${p.pid }">td>
    27. 	tr>
    28. 	<tr>
    29. 		<td>菜单/按钮：td>
    30. 		<td><input type="text" name = "ismenu" value="${p.ismenu }">td>
    31. 	tr>
    32. 	
    33. 	<tr>
    34. 		<td>显示的顺序：td>
    35. 		<td><input type="text" name = "displayno" value="${p.displayno }">td>
    36. 	tr>
    37. 	
    38. 	
    39. 	table>
    40. 	<a href="${pageContext.request.contextPath }/permission.action?methodName=list">返回a>
    41. 	
    42. 	
    43. 	
    44. 	form>
    45.  
    46. body>
    47. html>

    update.jsp

    1. <%@ page language="java" contentType="text/html; charset=UTF-8"
    2.     pageEncoding="UTF-8"%>
    3. html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    4. <html>
    5. <head>
    6. <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    7. <title>Insert title heretitle>
    8. head>
    9. <body>
    10. 	<form action="${pageContext.request.contextPath }/permission.action?methodName=update" method="post">
    11. 	<table border="1px">
    12. 	<tr>
    13. 		<td>名称：td>
    14. 		<td><input type="text" name = "name" value="${p.name }">td>
    15. 	tr>
    16. 	<tr>
    17. 		<td>描述:td>
    18. 		<td><input type="text" name = "description" value="${p.description }">td>
    19. 	tr>
    20. 	<tr>
    21. 		<td>点击菜单的界面：td>
    22. 		<td><input type="text" name = "url" value="${p.url }">td>
    23. 	tr>
    24. 	<tr>
    25. 		<td>父级菜单的id：td>
    26. 		<td><input type="text" name = "pid" value="${p.pid }">td>
    27. 	tr>
    28. 	<tr>
    29. 		<td>菜单/按钮：td>
    30. 		<td><input type="text" name = "ismenu" value="${p.ismenu }">td>
    31. 	tr>
    32. 	
    33. 	<tr>
    34. 		<td>显示的顺序：td>
    35. 		<td><input type="text" name = "displayno" value="${p.displayno }">td>
    36. 	tr>
    37. 	
    38. 	
    39. 	table>
    40. 	<input type="hidden" name="id" value="${p.id }">
    41. 	<input type="submit" value="提交">
    42. 	<a href="${pageContext.request.contextPath }/permission.action?methodName=list">返回a>
    43. 	
    44. 	
    45. 	
    46. 	form>
    47.  
    48. body>
    49. html>

    运行界面：

     

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  • 原文地址：https://blog.csdn.net/weixin_63544775/article/details/126116832