package cn.focus.dc.jiajing.util; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.alibaba.fastjson.serializer.SerializerFeature; import com.google.common.collect.ImmutableMap; import java.util.Collections; import java.util.HashMap; import java.util.List; import java.util.Map; /** * <p> * JsonResponse class. * </p> * * @author [email protected] json工具类 * @version $Id: $Id */ public final class JsonResponse { private JsonResponse() { } private static SerializerFeature[] features = {SerializerFeature.WriteNullNumberAsZero, SerializerFeature.WriteNullStringAsEmpty, SerializerFeature.DisableCircularReferenceDetect}; /** * <p> * badResult. * </p> * * @param cause a {@link String} object. * @return a {@link String} object. */ public static String badResult(String cause) { JSONObject result = new JSONObject(); result.put("errorCode", 1); result.put("errorMessage", cause); // return "@" + result.toJSONString(); return "@" + JSON.toJSONString(result, features); } /** * <p> * emptyResult. * </p> * * @param cause a {@link String} object. * @return a {@link String} object. */ public static String emptyResult(String cause) { JSONObject result = new JSONObject(); result.put("errorCode", 2); result.put("errorMessage", cause); // return "@" + result.toJSONString(); return "@" + JSON.toJSONString(result, features); } /** * jsonp请求失败 * * @param cause a {@link String} object. * @param callback a {@link String} object. * @return a {@link String} object. */ public static String badResult(String cause, String callback) { JSONObject result = new JSONObject(); result.put("errorCode", 1); result.put("errorMessage", cause); // return "@" + callback + "(" + result.toJSONString() + ")"; return "@" + callback + "(" + JSON.toJSONString(result, features) + ")"; } /** * <p> * badResult. * </p> * * @param cause a {@link java.util.Map} object. * @return a {@link String} object. */ public static String badResult(Map<String, String> cause) { JSONObject result = new JSONObject(); result.put("errorCode", 1); result.put("errorMessage", cause); // return "@" + result.toJSONString(); return "@" + JSON.toJSONString(result, features); } /** * 区分错误类型 * * @param type a int. * @param cause a {@link String} object. * @return a {@link String} object. */ public static String badResult(int type, String cause) { JSONObject result = new JSONObject(); result.put("errorCode", 1); result.put("errorMessage", ImmutableMap.of("type", type, "msg", cause)); // return "@" + result.toJSONString(); return "@" + JSON.toJSONString(result, features); } /** * <p> * ok. * </p> * * @return a {@link String} object. */ public static String ok() { JSONObject result = new JSONObject(); result.put("errorCode", 0); result.put("data", "成功"); return "@" + result.toString(); } /** * <p> * okWithEmpty. * </p> * * @return a {@link String} object. */ public static String okWithEmpty() { JSONObject result = new JSONObject(); result.put("errorCode", 0); result.put("data", Collections.emptyList()); return "@" + result.toString(); } /** * <p> * ok. * </p> * * @param key a {@link String} object. * @param value a {@link Object} object. * @return a {@link String} object. */ public static String ok(String key, Object value) { JSONObject result = new JSONObject(); result.put("errorCode", 0); result.put("data", ImmutableMap.of(key, value)); return "@" + JSON.toJSONString(result, features); // return "@" + result.toJSONString(); } /** * <p> * ok. * </p> * * @param object a {@link Object} object. * @return a {@link String} object. */ public static String ok(Object object) { JSONObject result = new JSONObject(); result.put("errorCode", 0); result.put("data", object); return "@" + JSON.toJSONString(result, features); // return "@" + result.toJSONString(); } /** * 返回分页结果json字串 * * @param object 数据对象 * @param pageTotal 结果列表总共多少页 * @param pageSize 每页多少条记录 * @param pageNo 页号 * @return json 字串 */ public static String okWithPaginate(Object object, int pageTotal, int pageSize, int pageNo) { JSONObject result = new JSONObject(); result.put("pageTotal", pageTotal); result.put("pageSize", pageSize); result.put("pageNo", pageNo); result.put("data", object); result.put("errorCode", 0); return "@" + JSON.toJSONString(result, features); // return "@" + result.toJSONString(); } /** * 返回分页结果json字串 * * @param object 数据对象 * @param pageTotal 结果列表总共多少页 * @param pageSize 每页多少条记录 * @param pageNo 页号 * @param count 数据条数 * @return json 字串 */ public static String okWithPaginate(Object object, int count) { JSONObject result = new JSONObject(); result.put("data", object); result.put("count", count); result.put("errorCode", 0); return "@" + JSON.toJSONString(result, features); // return "@" + result.toJSONString(); } /** * <p> * jsonp. * </p> * * @param object a {@link Object} object. * @param callback a {@link String} object. * @return a {@link String} object. */ public static String jsonp(Object object, String callback) { JSONObject result = new JSONObject(); result.put("errorCode", 0); result.put("data", object); return "@" + callback + "(" + JSON.toJSONString(result, features) + ")"; // return "@" + callback + "(" + result.toJSONString() + ")"; } /** * 可以通过map形式传递参数,但是如果是ok,msg这两个参数的值会被覆盖掉 * * @param params a {@link java.util.Map} object. * @return a {@link String} object. */ public static String ok(Map<String, Object> params) { JSONObject result = new JSONObject(); result.put("errorCode", 0); result.put("data", params); return "@" + JSON.toJSONString(result, features); // return "@" + result.toJSONString(); } /** * 可以通过map形式传递参数,但是如果是ok,msg这两个参数的值会被覆盖掉 * * @param params a {@link com.google.common.collect.ImmutableMap} object. * @return a {@link String} object. */ public static String ok(ImmutableMap<String, Object> params) { JSONObject result = new JSONObject(); result.put("errorCode", 0); result.put("data", params); return "@" + JSON.toJSONString(result, features); // return "@" + result.toJSONString(); } /** * 返回分页结果json字串 * * @param list * @param pageTotal * @param pageSize * @param pageNo * @param <T> * @return json 字串 */ public static <T> String okWithPaginate(List<T> list, int pageTotal, int pageSize, int pageNo) { JSONObject result = new JSONObject(); result.put("pageTotal", pageTotal); result.put("pageSize", pageSize); result.put("pageNo", pageNo); result.put("errorCode", 0); result.put("data", list); return "@" + JSON.toJSONString(result, features); // return "@" + result.toJSONString(); } /** * 返回分页结果的json * * @param params * @param pageTotal * @param pageSize * @param pageNo * @return json 字串 */ public static String okWithPaginate(Map<String, Object> params, int pageTotal, int pageSize, int pageNo) { JSONObject result = new JSONObject(); result.put("pageTotal", pageTotal); result.put("pageSize", pageSize); result.put("pageNo", pageNo); result.put("errorCode", 0); result.put("data", params); return "@" + JSON.toJSONString(result, features); // return "@" + result.toJSONString(); } /** * 返回分页结果的json * * @param params * @param pageTotal * @param pageSize * @param pageNo * @return json 字串 */ public static String okWithPaginateDisableRef(Map<String, Object> params, int pageTotal, int pageSize, int pageNo) { JSONObject result = new JSONObject(); result.put("pageTotal", pageTotal); result.put("pageSize", pageSize); result.put("pageNo", pageNo); result.put("errorCode", 0); result.put("data", params); return "@" + JSON.toJSONString(result, features); // return "@" + JSON.toJSONString(result, SerializerFeature.DisableCircularReferenceDetect); } /** * 返回分页结果json字串,去掉fastjson循环引用功能 * * @param object 数据对象 * @param pageTotal 结果列表总共多少页 * @param pageSize 每页多少条记录 * @param pageNo 页号 * @param count 数据条数 * @return json 字串 */ public static String okWithPaginateDisableRef(Object object, int count) { JSONObject result = new JSONObject(); result.put("data", object); result.put("count", count); result.put("errorCode", 0); //消除fastjson对同一对象循环引用的问题 return "@" + JSON.toJSONString(result, features); // return "@" + JSON.toJSONString(result, SerializerFeature.DisableCircularReferenceDetect); } /** * <p> * main. * </p> * * @param args an array of {@link String} objects. */ public static void main(String[] args) { Map<String, Object> params = new HashMap<String, Object>(); params.put("test", 1); params.put("test1", "ok"); } }
fastjson的SerializerFeature用法
http://code.alibabatech.com/wiki/display/FastJSON/Serial+Features
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