struts2使用通配符与动态方法调用

1. 使用通配符

新建项目HeadFirstStruts2Chap02_05

GradeAction.java

package com.andrew.action;
import com.opensymphony.xwork2.ActionSupport;
public class GradeAction extends ActionSupport {
    private String name;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String list()throws Exception{
        System.out.println("班级查找");
        name="班级查找";
        return SUCCESS;
    }
    public String add()throws Exception{
        System.out.println("班级添加");
        name="班级添加";
        return SUCCESS;
    }
    public String update()throws Exception{
        System.out.println("班级修改");
        name="班级修改";
        return SUCCESS;
    }
    public String delete()throws Exception{
        System.out.println("班级删除");
        name="班级删除";
        return SUCCESS;
    }
}

StudentAction.java

package com.andrew.action;
import com.opensymphony.xwork2.ActionSupport;
public class StudentAction extends ActionSupport {
    private String name;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String list()throws Exception{
        System.out.println("学生查找");
        name="学生查找";
        return SUCCESS;
    }
    public String add()throws Exception{
        System.out.println("学生添加");
        name="学生添加";
        return SUCCESS;
    }
    public String update()throws Exception{
        System.out.println("学生修改");
        name="学生修改";
        return SUCCESS;
    }
    public String delete()throws Exception{
        System.out.println("学生删除");
        name="学生删除";
        return SUCCESS;
    }
}

1.1) 使用通配符 xxx_*

struts.xml

<package name="manage" namespace="/" extends="struts-default">
    <action name="student_*" class="com.andrew.action.StudentAction" method="{1}">
        <result name="success">success.jsp</result>
    </action>
    <action name="grade_*" class="com.andrew.action.GradeAction" method="{1}">
        <result name="success">success.jsp</result>
    </action>
</package>

index.jsp

<h1>通配符</h1>
<a href="student_list" target="_blank">学生信息查询</a>&nbsp;
<a href="student_add" target="_blank">学生信息添加</a>&nbsp;
<a href="student_update" target="_blank">学生信息修改</a>&nbsp;
<a href="student_delete" target="_blank">学生信息删除</a>&nbsp;
<br/><br/>
<a href="grade_list" target="_blank">班级信息查询</a>&nbsp;
<a href="grade_add" target="_blank">班级信息添加</a>&nbsp;
<a href="grade_update" target="_blank">班级信息修改</a>&nbsp;
<a href="grade_delete" target="_blank">班级信息删除</a>&nbsp;<br/>

success.jsp

Ok!${name }

http://localhost:8080/HeadFirstStruts2Chap02_05/index.jsp
Ok!学生查找

1.2) 使用通配符 *_*

第一个字母大写！！！

struts.xml

<package name="manage" namespace="/" extends="struts-default">
    <action name="*_*" class="com.andrew.action.{1}Action" method="{2}">
        <result name="success">success.jsp</result>
    </action>
</package>

index.jsp

<h1>通配符</h1>
<a href="Student_list" target="_blank">学生信息查询</a>&nbsp;
<a href="Student_add" target="_blank">学生信息添加</a>&nbsp;
<a href="Student_update" target="_blank">学生信息修改</a>&nbsp;
<a href="Student_delete" target="_blank">学生信息删除</a>&nbsp;
<br/><br/>
<a href="Grade_list" target="_blank">班级信息查询</a>&nbsp;
<a href="Grade_add" target="_blank">班级信息添加</a>&nbsp;
<a href="Grade_update" target="_blank">班级信息修改</a>&nbsp;
<a href="Grade_delete" target="_blank">班级信息删除</a>&nbsp;<br/>

success.jsp

Ok!${name }

http://localhost:8080/HeadFirstStruts2Chap02_05/index.jsp
Ok!学生查找

2. 动态方法调用

开启动态方法调用：
<constant name="struts.enable.DynamicMethodInvocation" value="true" />

struts.xml

<constant name="struts.enable.DynamicMethodInvocation" value="true" />
<package name="manage" namespace="/" extends="struts-default">
    <action name="student" class="com.andrew.action.StudentAction">
        <result name="success">success.jsp</result>
    </action>
    <action name="grade" class="com.andrew.action.GradeAction">
        <result name="success">success.jsp</result>
    </action>
</package>

index.jsp

<h1>动态方法调用</h1>
<a href="student!list" target="_blank">学生信息查询</a>&nbsp;
<a href="student!add" target="_blank">学生信息添加</a>&nbsp;
<a href="student!update" target="_blank">学生信息修改</a>&nbsp;
<a href="student!delete" target="_blank">学生信息删除</a>&nbsp;
<br/><br/>
<a href="grade!list" target="_blank">班级信息查询</a>&nbsp;
<a href="grade!add" target="_blank">班级信息添加</a>&nbsp;
<a href="grade!update" target="_blank">班级信息修改</a>&nbsp;
<a href="grade!delete" target="_blank">班级信息删除</a>&nbsp;<br/>

success.jsp

Ok!${name }

http://localhost:8080/HeadFirstStruts2Chap02_05/index.jsp
Ok!学生查找