工具类加上渲染工具类

guns-core/src/main/java/com/stylefeng/guns/core/exception/GunsExceptionEnum.java

@@ -8,6 +8,11 @@ package com.stylefeng.guns.core.exception;
 public enum GunsExceptionEnum {
 
 	/**
+	 * 其他
+	 */
+	WRITE_ERROR(500,"渲染界面错误"),
+
+	/**
 	 * 文件上传
 	 */
 	FILE_READING_ERROR(400,"FILE_READING_ERROR!"),

guns-core/src/main/java/com/stylefeng/guns/core/util/RenderUtil.java

+package com.stylefeng.guns.core.util;
+
+import com.alibaba.fastjson.JSON;
+import com.stylefeng.guns.core.exception.GunsException;
+import com.stylefeng.guns.core.exception.GunsExceptionEnum;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+/**
+ * 渲染工具类
+ *
+ * @author fengshuonan
+ * @date 2017-08-25 14:13
+ */
+public class RenderUtil {
+
+    /**
+     * 渲染json对象
+     */
+    public static void renderJson(HttpServletResponse response, Object jsonObject) {
+        try {
+            response.setCharacterEncoding("UTF-8");
+            PrintWriter writer = response.getWriter();
+            writer.write(JSON.toJSONString(jsonObject));
+        } catch (IOException e) {
+            throw new GunsException(GunsExceptionEnum.WRITE_ERROR);
+        }
+    }
+}