这几天在用FastJSON，发现需要测试一些关键点，包括：

1、是否支持内部类：测试结果是支持，但是需要设置为静态类（static）

2、是否支持继承的自动序列化及反序列化：测试结果是支持

3、缺字段或者多出字段时，反序列化（JSON.parseObject）是否会崩溃：测试结果是不会，对应的成员会保持默认值

 

下面贴出程序：

 

package com.test.fastJSON;import java.io.Serializable;import java.util.ArrayList;import java.util.List;import com.alibaba.fastjson.JSON;public class Main {    //父类    static class Parent implements Serializable {        private static final long serialVersionUID = 1L;                private String title;        public String getTitle() {            return title;        }        public void setTitle(String title) {            this.title = title;        }    }    //子类1    static class Child1 extends Parent implements Serializable  {        private static final long serialVersionUID = 1L;                private List
     
       extra;                private int index = -1;        public List
      
        getExtra() {            return extra;        }        public void setExtra(List
       
         extra) {            this.extra = extra;        }        public int getIndex() {            return index;        }        public void setIndex(int index) {            this.index = index;        }    }    //子类2    static class Child2 extends Parent implements Serializable  {        private static final long serialVersionUID = 1L;                private ExtraStruct extra;        public ExtraStruct getExtra() {            return extra;        }        public void setExtra(ExtraStruct extra) {            this.extra = extra;        }    }    //子类2嵌套类    static class ExtraStruct implements Serializable {        private static final long serialVersionUID = 1L;                private String key;        private String value;                public String getKey() {            return key;        }        public void setKey(String key) {            this.key = key;        }        public String getValue() {            return value;        }        public void setValue(String value) {            this.value = value;        }    }        /**     * @param args     */    public static void main(String[] args) {        //测试序列化        Child1 c1 = new Child1();        c1.setTitle("c1");        c1.setIndex(123);        c1.setExtra(new ArrayList
        
         ());        c1.getExtra().add("111");        c1.getExtra().add("222");                Child2 c2 = new Child2();        c2.setTitle("c2");        c2.setExtra(new ExtraStruct());        c2.getExtra().setKey("k");        c2.getExtra().setValue("v");                System.out.println(JSON.toJSONString(c1));        System.out.println(JSON.toJSONString(c2));        System.out.println("======================");                //测试反序列化        String s1 = "{\"extra\":[\"111\",\"222\"],\"title\":\"c1\",\"index\":123}";        String s2 = "{\"extra\":{\"key\":\"k\",\"value\":\"v\"},\"title\":\"c2\"}";                Child1 cc1 = JSON.parseObject(s1, Child1.class);        Child2 cc2 = JSON.parseObject(s2, Child2.class);                System.out.println(JSON.toJSONString(cc1));        System.out.println(JSON.toJSONString(cc2));        System.out.println("======================");                //测试缺字段情况        s1 = "{\"extra\":[\"111\",\"222\"]}";        s2 = "{\"extra\":{\"key\":\"k\"},\"title\":\"c2\"}";                cc1 = JSON.parseObject(s1, Child1.class);        cc2 = JSON.parseObject(s2, Child2.class);                System.out.println(JSON.toJSONString(cc1));        System.out.println(JSON.toJSONString(cc2));        System.out.println("======================");                //测试多出字段情况        s1 = "{\"extra\":[\"111\",\"222\"],\"title\":\"c1\",\"tt\":\"111\"}";        s2 = "{\"extra\":{\"key\":\"k\",\"value\":\"v\",\"tt\":\"111\"},\"title\":\"c2\"}";                cc1 = JSON.parseObject(s1, Child1.class);        cc2 = JSON.parseObject(s2, Child2.class);                System.out.println(JSON.toJSONString(cc1));        System.out.println(JSON.toJSONString(cc2));        System.out.println("======================");    }    }
        
       
      
     

 

 

 

下面是运行结果：

{"extra":["111","222"],"index":123,"title":"c1"}{"extra":{"key":"k","value":"v"},"title":"c2"}======================{"extra":["111","222"],"index":123,"title":"c1"}{"extra":{"key":"k","value":"v"},"title":"c2"}======================{"extra":["111","222"],"index":-1}{"extra":{"key":"k"},"title":"c2"}======================{"extra":["111","222"],"index":-1,"title":"c1"}{"extra":{"key":"k","value":"v"},"title":"c2"}======================