package com.self.common;

import java.io.IOException;

import java.lang.reflect.Field;

import java.nio.charset.Charset;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.http.HttpInputMessage;

import org.springframework.http.HttpOutputMessage;

import org.springframework.http.MediaType;

import org.springframework.http.converter.AbstractHttpMessageConverter;

import org.springframework.http.converter.HttpMessageNotReadableException;

import org.springframework.http.converter.HttpMessageNotWritableException;

import com.alibaba.fastjson.JSON;

import com.alibaba.fastjson.serializer.SerializerFeature;

import com.self.controller.TestController;

import com.self.dao.mes.UserMapper;

import com.self.entity.mes.User;

public class MyMessageConverter extends AbstractHttpMessageConverter<Object> {

public final static Charset UTF8 = Charset.forName("UTF-8");

public MyMessageConverter() {

// 设置我们媒体类型

super(new MediaType("application", "json", UTF8));

}

// 标明本HttpMessageConverter处理所有类，过滤在这些

@Override

protected boolean supports(Class<?> aClass) {

return true;

}

//发起请求，反序列化时调用

@Override

protected Object readInternal(Class<? extends Object> clazz, HttpInputMessage inputMessage)

throws IOException, HttpMessageNotReadableException {

System.out.println("readInternal");

return null;

}

//放回数据，序列化时调用

@Override

protected void writeInternal(Object obj, HttpOutputMessage outputMessage)

throws IOException, HttpMessageNotWritableException {

System.out.println("writeInternal");

Class<? extends Object> clazz = obj.getClass();

Field[] fields = clazz.getDeclaredFields();

for (Field field : fields) {

//自定义注解UserNoToName

if (field.isAnnotationPresent(UserNoToName.class)) {

try {

field.setAccessible(true);

String val = field.get(obj)==null?"":(String)field.get(obj);

// field.set(obj, "df1");

// field.set(obj, userMapper.findByLoginName(val).getDisplayName());

} catch (IllegalArgumentException | IllegalAccessException e) {

e.printStackTrace();

}

}

}

outputMessage.getBody().write(JSON.toJSONBytes(obj,

SerializerFeature.DisableCircularReferenceDetect,

SerializerFeature.WriteMapNullValue,

SerializerFeature.WriteNullStringAsEmpty));

}

}