返回包装类
导入依赖
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.54</version>
</dependency>
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
public class JsonUtils
{
//默认成功
private boolean flag = true;
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public Integer getCode() {
return code;
}
public void setCode(Integer code) {
this.code = code;
}
public Object getData() {
return data;
}
public void setData(Object data) {
this.data = data;
}
private String msg;
private Integer code;
private Object data;
public boolean isFlag() {
return flag;
}
public void setFlag(boolean flag) {
this.flag = flag;
}
public JsonUtils() {
}
public JsonUtils(boolean flag, String msg) {
this.flag = flag;
this.msg = msg;
}
public JsonUtils(boolean flag, String msg, Integer code, Object data) {
this.flag = flag;
this.msg = msg;
this.code = code;
this.data = data;
}
public JsonUtils(boolean flag, String msg, Integer code) {
this.flag = flag;
this.msg = msg;
this.code = code;
}
public static JsonUtils error(String msg, Integer code, Object data) {
return new JsonUtils(false, msg, code, data);
}
/**
* restful 返回
*/
public static JsonUtils error(String msg, Integer code) {
return new JsonUtils(false, msg, code);
}
public static JsonUtils error(String msg, Object data) {
return new JsonUtils(false, msg, 400, data);
}
public static JsonUtils error(String msg) {
return new JsonUtils(false, msg, 400);
}
public static JsonUtils success(String msg) {
return new JsonUtils(true, msg, 200);
}
public static JsonUtils success(String msg, Integer code) {
return new JsonUtils(true, msg, code);
}
public static JsonUtils success(String msg, Object data) {
JsonUtils util = new JsonUtils(true, msg);
util.setData(data);
if (data == null){
util.setCode(401);
}else {
util.setCode(200);
}
return util;
}
/**
* java对象转json字符串
*/
public static String object2Json(Object object){
Object o = JSONObject.toJSON(object);
if (o == null){
return null;
}
return o.toString();
}
/**
* java对象转json字符串
*/
public static String stringify(Object object){
Object o = JSONObject.toJSON(object);
if (o == null){
return null;
}
return o.toString();
}
/**
* json 转java对象
*/
public static Object json2Object(String json){
try {
return JSONObject.parseObject(json);
}catch (Exception e){
return JSONArray.parseArray(json);
}
}
/**
* json 转java对象
*/
public static Object parse(String json){
try {
return JSONObject.parseObject(json);
}catch (Exception e){
return JSONArray.parseArray(json);
}
}
/**
* 从JSONObject中根据key获取value
*/
public static Object getObj(JSONObject object, String key){
Object o = null;
if (object.containsKey("ids")){
o = object.get("ids");
}
return o;
}
/**
* 添加一个属性
*/
public static JSONObject addOption(Object object, String key, Object value){
JSONObject o = (JSONObject) JSONObject.toJSON(object);
o.put(key, value);
return o;
}
/**
* 移除属性
*/
public static JSONObject removeOption(Object object, String key){
JSONObject o = (JSONObject) JSONObject.toJSON(object);
o.remove(key);
return o;
}
}