圖片上傳解決瀏覽器兼容性的問題

KindEditor的圖片上傳插件，對瀏覽器兼容性不好。
使用@ResponseBody註解返回java對象，
Content-Type:application/json;charset=UTF-8

應該讓其返回

在camel-dspt-common 添加工具類JsonUtils.java

package com.camel.common.utils;

import java.util.List;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * 淘淘商城自定義響應結構
 */
public class JsonUtils {

    // 定義jackson對象
    private static final ObjectMapper MAPPER = new ObjectMapper();

    /**
     * 將對象轉換成json字符串。
     * <p>Title: pojoToJson</p>
     * <p>Description: </p>
     * @param data
     * @return
     */
    public static String objectToJson(Object data) {
        try {
            String string = MAPPER.writeValueAsString(data);
            return string;
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
        return null;
    }
    
    /**
     * 將json結果集轉化爲對象
     * 
     * @param jsonData json數據
     * @param clazz 對象中的object類型
     * @return
     */
    public static <T> T jsonToPojo(String jsonData, Class<T> beanType) {
        try {
            T t = MAPPER.readValue(jsonData, beanType);
            return t;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    
    /**
     * 將json數據轉換成pojo對象list
     * <p>Title: jsonToList</p>
     * <p>Description: </p>
     * @param jsonData
     * @param beanType
     * @return
     */
    public static <T>List<T> jsonToList(String jsonData, Class<T> beanType) {
        JavaType javaType = MAPPER.getTypeFactory().constructParametricType(List.class, beanType);
        try {
            List<T> list = MAPPER.readValue(jsonData, javaType);
            return list;
        } catch (Exception e) {
            e.printStackTrace();
        }
        
        return null;
    }
    
}

返回字符串時：
Content-Type:text/plain;charset=UTF-8

指定響應結果的content-type：

KindEditor的多圖片上傳插件最後響應的content-type是text/plan格式的json字符串。兼容性是最好的。

package com.camel.controller;

import java.awt.PageAttributes.MediaType;
import java.util.HashMap;
import java.util.Map;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import com.camel.common.utils.FastDFSClient;
import com.camel.common.utils.JsonUtils;

@Controller
public class PictureController {
    @Value("${IMAGE_SERVER_URL}")
    private String IMAGE_SERVER_URL;

    @RequestMapping(value="/pic/upload",produces=org.springframework.http.MediaType.TEXT_PLAIN_VALUE+";charset=utf-8")
    @ResponseBody
    public String fileUpload(MultipartFile uploadFile){
        
        try {
            //1、取文件的擴展名
            String originalFilename = uploadFile.getOriginalFilename();
            String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            //2、創建一個FastDFS的客戶端
            FastDFSClient fastDFSClient = new FastDFSClient("classpath:conf/client.conf");
            //3、執行上傳處理
            String path = fastDFSClient.uploadFile(uploadFile.getBytes(), extName);
            //4、拼接返回的url和ip地址，拼裝成完整的url
            String url = IMAGE_SERVER_URL + path;
            //5、返回map
            Map result = new HashMap<>();
            result.put("error", 0);
            result.put("url", url);
            return JsonUtils.objectToJson(result);
        } catch (Exception e) {
            e.printStackTrace();
            //5、返回map
            Map result = new HashMap<>();
            result.put("error", 1);
            result.put("message", "圖片上傳失敗");
            return JsonUtils.objectToJson(result);
        }
    }

        
        
        
        
    
}