使用result配置结果视图
2024-04-14 22:01:39
2019独角兽企业重金招聘Python工程师标准>>> 
1、概述
2、resultd的name属性
struts.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN""http://struts.apache.org/dtds/struts-2.3.dtd">
<struts><!-- Add packages here --><constant name="struts.devMode" value="true" /><constant name="struts.enable.DynamicMethodInvocation" value="false"></constant><!-- 取名与用户模块相对应 --><!-- <package name="default" namespace="/" extends="struts-default"> --><package name="user" namespace="/user" extends="struts-default"><default-action-ref name="index"/><action name="index"><result>/index.jsp</result></action><action name="login" class="com.ljb.web.action.LoginAction"><result>/loginSuccess.jsp</result></action></package>
</struts>login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body><form action="user/login" method="post">用户名：<input type="text" name="userName"/><br/>密码：<input type="password" name="password"/><br/>年龄：<input type="text" name="age"/><br/><input type="submit" value="提交"/> <input type="reset" value="重置"/></form>
</body>
</html>注：路径（user/login）
小结：
3、result的type属性
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN""http://struts.apache.org/dtds/struts-2.3.dtd">
<struts><!-- Add packages here --><constant name="struts.devMode" value="true" /><constant name="struts.enable.DynamicMethodInvocation" value="false"></constant><package name="user" namespace="/user" extends="struts-default"><default-action-ref name="index"/><action name="index"><result>/index.jsp</result></action><action name="login" class="com.ljb.web.action.LoginAction" method="login"><result name="success">/loginSuccess.jsp</result><result name="input">/login.jsp</result></action></package>
</struts>package com.ljb.web.action;
import com.opensymphony.xwork2.ActionSupport;
/*** 第一种传递参数方法（设置私有属性，设置set与get方法）* @author Administrator**/
public class LoginAction extends ActionSupport {private String userName;private String password;private int age;public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}@Overridepublic String execute() throws Exception {// TODO Auto-generated method stubreturn SUCCESS;}public String login () {if (userName.equals("admin")&&password.equals("ok")) {return SUCCESS;} else {return INPUT;}}
}小结：
4、全局结果
struts.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN""http://struts.apache.org/dtds/struts-2.3.dtd">
<struts><!-- Add packages here --><constant name="struts.devMode" value="true" /><package name="house" namespace="/house" extends="struts-default"><global-results><result name="error">/error.jsp</result></global-results><!-- <action name="house_add" class="com.ljb.web.action.HouseAction" method="add"><result>/house_add_success.jsp</result></action><action name="house_update" class="com.ljb.web.action.HouseAction" method="update"><result>/house_update_success.jsp</result></action> --><action name="house_*" class="com.ljb.web.action.HouseAction" method="{1}"><result>/house_{1}_success.jsp</result></action></package>
</struts>house_add.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body><form action="house/house_add" method="post"><input type="submit" value="添加房屋信息"/></form>
</body>
</html>HouseAction类：
package com.ljb.web.action;
import com.opensymphony.xwork2.ActionSupport;
public class HouseAction extends ActionSupport {/*** 添加房屋信息* @return*/public String add () {System.out.println("处理添加房屋信息。");// 模拟添加房屋信息异常try {if (1==1) {throw new Exception();}} catch (Exception e) {return ERROR;}return SUCCESS;}/*** 修改房屋信息* @return*/public String update () {System.out.println("处理修改房屋信息。");return SUCCESS;}@Overridepublic String execute() throws Exception {// TODO Auto-generated method stubreturn SUCCESS;}
}
5、动态结果
login.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body><form action="user/login" method="post">用户名：<input type="text" name="userName"/><br/>密码：<input type="password" name="password"/><br/>年龄：<input type="text" name="age"/><br/><input type="submit" value="提交"/> <input type="reset" value="重置"/></form>
</body>
</html>commonSuccess.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>普通用户页面</h1>
</body>
</html>adminSuccess.jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>管理员页面</h1>
</body>
</html>CommonAction:
package com.ljb.web.action;
import com.opensymphony.xwork2.ActionSupport;
public class CommonAction extends ActionSupport {@Overridepublic String execute() throws Exception {// TODO Auto-generated method stubreturn SUCCESS;}
}AdminAction:
package com.ljb.web.action;
import com.opensymphony.xwork2.ActionSupport;
public class AdminAction extends ActionSupport {@Overridepublic String execute() throws Exception {// TODO Auto-generated method stubreturn SUCCESS;}
}LoginAction:
package com.ljb.web.action;
import com.opensymphony.xwork2.ActionSupport;
/*** 第一种传递参数方法（设置私有属性，设置set与get方法）* @author Administrator**/
public class LoginAction extends ActionSupport {// 定义下一个需要跳转的action对应的字符串名称private String nextAction;public String getNextAction() {return nextAction;}public void setNextAction(String nextAction) {this.nextAction = nextAction;}private String userName;private String password;private int age;public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}@Overridepublic String execute() throws Exception {// TODO Auto-generated method stubreturn SUCCESS;}public String login () {if (userName.equals("admin")&&password.equals("admin")) {nextAction = "admin";return SUCCESS;} else if (userName.equals("common") && password.equals("common")) {nextAction = "common";return SUCCESS;} else {return INPUT;}}
}struts.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN""http://struts.apache.org/dtds/struts-2.3.dtd">
<struts><!-- Add packages here --><constant name="struts.devMode" value="true" /><package name="user" namespace="/user" extends="struts-default"><default-action-ref name="index"/><action name="index"><result>/index.jsp</result></action><action name="login" class="com.ljb.web.action.LoginAction" method="login"><result name="success" type="redirectAction">${nextAction}</result><result name="input">/login.jsp</result></action><action name="common" class="com.ljb.web.action.CommonAction"><result>/commonSuccess.jsp</result></action><action name="admin" class="com.ljb.web.action.AdminAction"><result>/adminSuccess.jsp</result></action></package></struts>
6、小结
转载于:https://my.oschina.net/u/2320342/blog/414145
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