浅谈struts2和json的集成

该例子以非常简单的形式描述了struts2和json的集成开发。。和大家共同学习。。
我用到的是struts2.2.3的jar包。
除了导入struts2的jar包外，还引入struts2-json-plugin.jar


JSONExample.java

package com.lysf.json;

import java.util.HashMap;
import java.util.Map;

import org.apache.struts2.json.annotations.JSON;

import com.opensymphony.xwork2.Action;

public class JSONExample {
    private String field1 = "str";
    private int[] ints = {10, 20};
    private Map map = new HashMap();
    private String customName = "custom";

    //'transient' fields are not serialized
    private transient String field2;

    //fields without getter method are not serialized
    private String field3;

    public String execute() {
        map.put("John", "Galt");
        return Action.SUCCESS;
    }

    public String getField1() {
        return field1;
    }

    public void setField1(String field1) {
        this.field1 = field1;
    }

    public int[] getInts() {
        return ints;
    }

    public void setInts(int[] ints) {
        this.ints = ints;
    }

    public Map getMap() {
        return map;
    }

    public void setMap(Map map) {
        this.map = map;
    }

    @JSON(name="newName")
    public String getCustomName() {
        return this.customName;
    }
}

struts.xml

<package name="example" extends="json-default">
     <action name="JSONExample" class="com.lysf.json.JSONExample">
      <result type="json"/>
     </action>
    </package>

web.xml

<filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>




最后得到的结果为：

{"newName":"custom","field1":"str","ints":[10,20],"map":{"John":"Galt"}}