精简util模块，ReturenResponse重构

server/src/main/java/cn/keking/model/FileType.java

@@ -50,9 +50,25 @@ public enum FileType {
         FILE_TYPE_MAPPER.put("dwg", FileType.cad);
     }
 
-    public static FileType to(String fileType){
+    private static FileType to(String fileType){
         return FILE_TYPE_MAPPER.getOrDefault(fileType,other);
     }
+    /**
+     * 查看文件类型(防止参数中存在.点号或者其他特殊字符，所以先抽取文件名，然后再获取文件类型)
+     *
+     * @param url url
+     * @return 文件类型
+     */
+    public static FileType typeFromUrl(String url) {
+        String nonPramStr = url.substring(0, url.contains("?") ? url.indexOf("?") : url.length());
+        String fileName = nonPramStr.substring(nonPramStr.lastIndexOf("/") + 1);
+        return typeFromFileName(fileName);
+    }
+
+    public static FileType typeFromFileName(String fileName) {
+        String fileType = fileName.substring(fileName.lastIndexOf(".") + 1);
+        return FileType.to(fileType);
+    }
 
     private final String instanceName;
 

server/src/main/java/cn/keking/model/ReturnResponse.java

@@ -4,11 +4,18 @@ import java.io.Serializable;
 
 /**
  * 接口返回值结构
+ *
  * @author yudian-it
  * @date 2017/11/17
  */
-public class ReturnResponse<T> implements Serializable{
+public class ReturnResponse<T> implements Serializable {
     private static final long serialVersionUID = 313975329998789878L;
+
+    public static final int SUCCESS_CODE = 0;
+    public static final int FAILURE_CODE = 1;
+    public static final String SUCCESS_MSG = "SUCCESS";
+    public static final String FAILURE_MSG = "FAILURE";
+
     /**
      * 返回状态
      * 0. 成功
@@ -31,6 +38,30 @@ public class ReturnResponse<T> implements Serializable{
         this.content = content;
     }
 
+    public static ReturnResponse<Object> failure(String errMsg) {
+        return new ReturnResponse<>(FAILURE_CODE, errMsg, null);
+    }
+
+    public static ReturnResponse<Object> failure() {
+        return failure(FAILURE_MSG);
+    }
+
+    public static ReturnResponse<Object> success(){
+        return success(null);
+    }
+
+    public static ReturnResponse<Object> success(Object content) {
+        return new ReturnResponse<>(SUCCESS_CODE, SUCCESS_MSG, content);
+    }
+
+    public boolean isSuccess(){
+        return SUCCESS_CODE == code;
+    }
+
+    public boolean isFailure(){
+        return !isSuccess();
+    }
+
     public int getCode() {
         return code;
     }