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基于Struts2的全局类型转换器

2008-12-03 18:17 507 查看

LoginAction.java

public class LoginAction implements Action {

//使用类型转换器将字符串请求参数直接转换成一个User实例

    private User user;

    private User customer;

    private Date birth;

//封装Action处理结果的tip属性

    private String tip;

    public void setUser(User user) {

        this.user = user;

    }

    public void setCustomer(User customer) {

        this.customer = customer;

    }

    public void setTip(String tip) {

        this.tip = tip;

    }

    public void setBirth(Date d) {

        this.birth = d;

    }

    public User getUser() {

        return (this.user);

    }

    public User getCustomer() {

        return (this.customer);

    }

    public Date getBirth() {

        return this.birth;

    }

    public String getTip() {

        return (this.tip);

    }

    public String execute() throws Exception {

        if (getUser().getName().equals("admin")

                && getUser().getPass().equals("admin")) {

            setTip("转换成功");

            return SUCCESS;

        } else {

            setTip("转换失败");

            return ERROR;

        }

    }

}
UserConverter.java

public class UserConverter extends StrutsTypeConverter {

    public Object convertFromString(Map context, String[] values, Class toClass) {

        User user = new User();

        String[] userValues = values[0].split(",");

        user.setName(userValues[0]);

        user.setPass(userValues[1]);

        return user;

    }

    @Override

    public String convertToString(Map context, Object o) {

        User user = (User) o;

        return "<" + user.getName() + "," + user.getPass() + ">";

    }

}
User.java

public class User {

    private String name;

    private String pass;

    public void setName(String name) {

        this.name = name;

    }

    public void setPass(String pass) {

        this.pass = pass;

    }

    public String getName() {

        return (this.name);

    }

    public String getPass() {

        return (this.pass);

    }

}
struts.xml

<struts>

    <package name="jCuckoo" extends="struts-default">

         <action name="login" class="jCuckoo.LoginAction">

            <result name="success">/welcome.jsp</result>

        </action>

    </package>

</struts>
xwork-conversion.properties

jCuckoojCuckoo.User=jCuckoo.UserConverter

web.xml

    

    <filter>

        <filter-name>struts2</filter-name>

        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>

    </filter>

    

    <filter-mapping>

        <filter-name>struts2</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>
input.jsp

<%@ page language="java" contentType="text/html; charset=GBK"%>

<html>

<head>

<title>全局类型转换器</title>

</head>

<body>

<form action="login.action" method="post">

    <table align="center" width="360">

    <caption><h3>全局类型转换器</h3></caption>

        <tr align="center">

            <td>用户信息的用户名和密码以英文逗号隔开</td>

        </tr>

        <tr>

            <td>请输入用户信息：<input type="text" name="user"/></td>

        </tr>

        <tr>

            <td>请输入客人信息：<input type="text" name="customer"/></td>

        </tr>

        <tr>

            <td>用户生日：<input type="text" name="birth"/></td>

        </tr>

        <tr align="center">

            <td><input type="submit" value="转换"/><input type="reset" value="重填"/></td>

        </tr>

    </table>

</form>

</body>

</html>

welcome.jsp

<%@ page language="java" contentType="text/html; charset=GBK"%>

<%@taglib prefix="s" uri="/struts-tags"%>

<html>

    <head>

        <title>转换成功</title>

    </head>

    <body>

        转换成功!<br>

        用户的用户名为:<s:property value="user.name"/><br>

        用户的密码为：<s:property value="user.pass"/><br>

        用户的生日为：<s:property value="birth"/><br>

        客人的用户名为:<s:property value="customer.name"/><br>

        客人的密码为：<s:property value="customer.pass"/><br>

    </body>

</html>

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