JSON工具类

package com.techson.himsnanhwa.admin.util;import java.io.IOException;//类1public class JSONUtils {private static final Log log = LogFactory.getLog(JSONUtils.class);public static void sendJSON(HttpServletResponse response, String keywords, String values) {response.setContentType("application/json");response.setCharacterEncoding("utf-8");PrintWriter outResponse = null;try {outResponse = response.getWriter();JSONObject jsonObject = new JSONObject();jsonObject.put(keywords, values);outResponse.print(jsonObject.toString());outResponse.flush();} catch (IOException e) {log.error("json utils exception :" + e);} finally {if(outResponse != null) {outResponse.close();}}}public static void sendJSON(HttpServletResponse response,JSONObject obj) {response.setContentType("application/json");response.setCharacterEncoding("utf-8");PrintWriter outResponse = null;try {outResponse = response.getWriter();outResponse.print(obj.toString());outResponse.flush();} catch (IOException e) {log.error("json utils exception :" + e);} finally {if(outResponse != null) {outResponse.close();}}}/** *  JSONUtils 传输sendJSON的处理 * @param response servlet的响应 * @param error 结果为true error =0,结果为false error = 1; */public static void sendJSON(HttpServletResponse response, int result) {response.setContentType("application/json");response.setCharacterEncoding("utf-8");PrintWriter outResponse = null;try {outResponse = response.getWriter();JSONObject jsonObject = new JSONObject();jsonObject.put("result", result);outResponse.print(jsonObject.toString());outResponse.flush();} catch (IOException e) {log.error("json utils exception :" + e);} finally {if(outResponse != null) {outResponse.close();}}}public static void sendJSON(HttpServletResponse response,int error, JSONObject content) {response.setContentType("application/json");response.setCharacterEncoding("utf-8");PrintWriter outResponse = null;try {outResponse = response.getWriter();JSONObject jsonObject = new JSONObject();jsonObject.put("error", error);jsonObject.put("content", content.get("msg"));outResponse.print(jsonObject.toString());outResponse.flush();log.info(jsonObject.toString());} catch (IOException e) {log.error("json utils exception :" + e);} finally {if(outResponse != null) {outResponse.close();}}}/** * JSONUtils 传输sendJSON的处理 * @param response servlet的响应 * @param error error = 0 结果为true,error = 1结果为false; * @param message error＝1对应的错误信息 * @param content error=0对应给request返回的内容 */public static void sendJSON(HttpServletResponse response,int error, JSONArray content) {response.setContentType("application/json");response.setCharacterEncoding("utf-8");PrintWriter outResponse = null;try {outResponse = response.getWriter();JSONObject jsonObject = new JSONObject();jsonObject.put("error", error);jsonObject.put("content", content);outResponse.print(jsonObject.toString());outResponse.flush();log.info(jsonObject.toString());} catch (IOException e) {log.error("json utils exception :" + e);} finally {if(outResponse != null) {outResponse.close();}}}public static void sendJSON(HttpServletResponse response,String error, JSONArray countrycontent, JSONArray citycontent) {response.setContentType("application/json");response.setCharacterEncoding("utf-8");PrintWriter outResponse = null;try {outResponse = response.getWriter();JSONObject jsonObject = new JSONObject();jsonObject.put("error", error);jsonObject.put("countryArr", countrycontent);jsonObject.put("cityArr", citycontent);outResponse.print(jsonObject.toString());outResponse.flush();} catch (IOException e) {log.error("json utils exception :" + e);} finally {if(outResponse != null) {outResponse.close();}}}public static void sendJSON(HttpServletResponse response,JSONArray array) {response.setContentType("application/json");response.setCharacterEncoding("utf-8");PrintWriter outResponse = null;try {outResponse = response.getWriter();outResponse.print(array.toString());outResponse.flush();} catch (IOException e) {log.error("json utils exception :" + e);} finally {if(outResponse != null) {outResponse.close();}}}public static boolean isExits(String key, JSONArray jsonArray, String type) {boolean result = false;for(int i=0; i< jsonArray.size(); i++) {JSONObject json = jsonArray.getJSONObject(i);if(json.get("areacode")!= null && json.get("areacode").equals(key) && "area".equalsIgnoreCase(type))return true;if(json.get("citycode")!= null && json.get("citycode").equals(key) && "city".equalsIgnoreCase(type))return true;}return result;}}

 

package com.zte.util;import java.io.StringWriter;import org.codehaus.jackson.JsonGenerator;import org.codehaus.jackson.map.ObjectMapper;/** * JSON工具  * */public class JSON {private static ObjectMapper mapper = new ObjectMapper();/** * 将实体对象转换成JSON格式的字符串 * @param obj * @return */public static String toJson(Object obj){String json = "";try {StringWriter writer = new StringWriter();JsonGenerator generator = mapper.getJsonFactory().createJsonGenerator(writer);mapper.writeValue(generator, obj);json = writer.toString();generator.close();writer.close();} catch (Exception e) {e.printStackTrace();}return json;}/** * JSON格式的字符串转成实体对象 * @param json * @param valueType * @return */public static <T> T fromJson(String json, Class<T> valueType){try {return null == json ? null : mapper.readValue(json, valueType);} catch (Exception e) {e.printStackTrace();return null;}}}

 

Map<String, Object> result = new HashMap<String, Object>(2);try {} catch (UploadFileException e) {result.put("code", 1);result.put("msg", e.getMessage());writeResponse(response,result);return;}private void writeResponse(HttpServletResponse response, Map<String, Object> result) {try {response.setContentType("text/html;charset=utf-8");response.getWriter().write(JSON.toJson(result));response.getWriter().flush();} catch (IOException e) {e.printStackTrace();}}

 

 另一个JSON工具类：

//Action:String s = this.versionService.saveOrUpdateVersion(version);if (MDSConstants.SUCCESS.equals(s)) {writeJson(new ResultJson(true, getText("保存成功")));} else {writeJson(new ResultJson(true, getText("保存失败")));}success : function(d) {var json = $.parseJSON(d);if (json.success) {$.messager.show({title : '系统提示',msg :json.msg});}else{$.messager.alert('系统提示',json.msg);}}或：List<MngMmField> fields = this.tableService.getFieldsByTableId(oid,userId);if (fields != null && !fields.isEmpty()) {writeJosnArray(fields);} else {writeJosnArray(new ArrayList<MngMmField>());}<script type="text/javascript">// JSON 字符串var strJSON = '{"Name":"Tom", "Age":14,"Enable":true}';//var obj = jQuery.parseJSON(strJSON);alert( obj.Name );</script>

 

//结果对象ResultJson.java：public class ResultJson  implements Serializable{  private boolean success = false;  private String msg = null;  private Integer resultcode = null;  private Object result = null;  public ResultJson()  {  }  public ResultJson(boolean success)  {setSuccess(success);  }  public ResultJson(boolean success, String msg, Object result) {setSuccess(success);this.msg = msg;this.result = result;  }  public ResultJson(boolean success, String msg) {setSuccess(success);this.msg = msg;  }  public ResultJson(boolean success, Object result) {setSuccess(success);this.result = result;  }  public String getMsg()  {return this.msg;  }  public void setMsg(String msg)  {this.msg = msg;  }  public void setResult(Object result)  {this.result = result;  }  public Object getResult()  {return this.result;  }  public void setSuccess(boolean success)  {this.success = success;  }  public boolean isSuccess()  {return this.success;  }  public Integer getResultcode()  {return this.resultcode;  }  public void setResultcode(Integer resultcode)  {this.resultcode = resultcode;  }}

 

//JSON.util//输出方法public void write(String str) {try {getResponse().setContentType("text/html;charset=utf-8");PrintWriter writer = getResponse().getWriter();writer.write(str);writer.flush();writer.close();} catch (Exception e) {}}public void writeJson(Object object, String dataFormatter)  {if (dataFormatter == null) {  dataFormatter = "yyyy-MM-dd";}String json = JSON.toJSONStringWithDateFormat(object, dataFormatter, new SerializerFeature[0]);write(json);  }public String getJson(Object object, String dataFormatter)  {if (dataFormatter == null) {  dataFormatter = "yyyy-MM-dd";}return JSON.toJSONStringWithDateFormat(object, dataFormatter, new SerializerFeature[0]);  }public void writeJson(Object object){writeJson(object, null);}public void writeJsonObject(Object object){JSONObject jsonObject = JSONObject.fromObject(object);write(jsonObject.toString());}public void writeJosnArray(Collection collection){JSONArray jsonArray = JSONArray.fromObject(collection);System.out.println("xxxd+" + jsonArray.toString());write(jsonArray.toString());}

 

。。。