全接口对象@Transient失效

[juqkai]

一个全接口对象, 通过代理生成的, 在接口中只声明了get, set方法, 没有字段申明.

在get上添加@transient, 会将这个字段序列出来.

原因是FieldInfo中强制判断了必须要有field才会判断是否是fieldTransient

fastjson/src/main/java/com/alibaba/fastjson/util/FieldInfo.java

[wenshao]

能提供testcase么？

[juqkai]

public class Issues1903Test {
    // Issues1903 issues =
    public static void main(String[] args) {
        MapHandler mh = new MapHandler();
        mh.add("name", "test");
        mh.add("age", 20);

        Issues1903 issues = (Issues1903) Proxy.newProxyInstance(mh.getClass().getClassLoader(), new Class[]{Issues1903.class}, mh);
        System.out.println(issues.getName());
        System.out.println(issues.getAge());

        System.out.println(JSON.toJSON(issues).toString()); //正确结果: {"age":20}
        System.out.println(JSON.toJSONString(issues));  //正确结果: {"age":20}
    }
}

interface Issues1903{
    @Transient
    public String getName();
    public void setName(String name);

    public Integer getAge();
    public void setAge(Integer age);
}


class MapHandler implements InvocationHandler{
    Map<String, Object> map = new HashMap<>();

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        String name = method.getName().substring(3);
        String first = String.valueOf(name.charAt(0));
        name = name.replaceFirst(first, first.toLowerCase());
        return map.get(name);
    }

    public void add(String key, Object val){
        map.put(key, val);
    }
}