SpringBoot整合zimg图片服务器

依赖

  <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.75</version>
        </dependency>

        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpmime</artifactId>
        </dependency>

也有

  <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

yml配置

zimg:
  server: http://192.168.80.135:4869

ZimgConfig.java

import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;

@Data
@Configuration
public class ZimgConfig {
    @Value("${zimg.server}")
    private String zimgServer;

}

ZimgUtils.java

import com.example.zimg.config.ZimgConfig;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.PostConstruct;

/**
 * zimg工具类
 *
 */
@Component
@Slf4j
public class ZimgUtils {

    @Autowired
    private ZimgConfig zimgConfig;

    public static ZimgUtils zimgUtils;

    /**
     * 初始化minio配置
     */
    @PostConstruct
    public void init() {
        zimgUtils = this;
        zimgUtils.zimgConfig = this.zimgConfig;
    }

    private static final String uploadPath = "/upload";
    private static final String deletePath = "/admin";

    /**
     * 成功返回：
     * {
     * "ret": true,
     * "info": {
     * "md5": "a48998d3095079c71d1c72054b847dcf",
     * "size": 110823
     * }
     * }
     * <p>
     * 失败返回：
     * {
     * "ret": false,
     * "error": {
     * "code": 5,
     * "message": "Content-Length error."
     * }
     * }
     *
     * @param multipartFile
     * @return
     * @throws Exception
     */
    public String uploadImage(MultipartFile multipartFile) throws Exception {
        String url = zimgConfig.getZimgServer() + uploadPath;
        String fileName = multipartFile.getOriginalFilename();
        String ext = fileName.substring(fileName.lastIndexOf(".") + 1);
        //创建post请求对象
        HttpPost post = new HttpPost(url);
        //文件类型
        post.addHeader("Content-Type", ext.toLowerCase());
        ByteArrayEntity byteArrayEntity = null;
        byteArrayEntity = new ByteArrayEntity(multipartFile.getBytes());

        post.setEntity(byteArrayEntity);
        CloseableHttpClient client = HttpClients.createDefault();
        //启动执行请求，并获得返回值
        CloseableHttpResponse response = client.execute(post);
        //得到返回的entity对象
        HttpEntity entity = response.getEntity();
        //把实体对象转换为string
        String result = EntityUtils.toString(entity, "UTF-8");
        return result;
    }

    /**
     * 需要zimg的配置开启权限
     * 修改配置文件 zimg.lua 修改 admin_rule='allow 127.0.0.1' =》 admin_rule='allow all'
     */
    public void deleteImage(String md5) throws Exception {
        String url = zimgConfig.getZimgServer() + deletePath;

        //创建URLBuilder
        URIBuilder uriBuilder = new URIBuilder(url);
        //设置参数
        uriBuilder.setParameter("md5", md5);
        uriBuilder.setParameter("t", "1");
        HttpGet httpGet = new HttpGet(uriBuilder.build());
        CloseableHttpClient client = HttpClients.createDefault();
        //启动执行请求，并获得返回值
        CloseableHttpResponse response = client.execute(httpGet);
        //得到返回的entity对象
        HttpEntity entity = response.getEntity();
        //把实体对象转换为string 这返回的html页面代码，，没找到json方式
        String result = EntityUtils.toString(entity, "UTF-8");
        log.info(result);
    }

}

使用

import com.alibaba.fastjson.JSONObject;
import com.example.zimg.utils.ZimgUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

/**
 * demo控制器
 */
@RestController
@Slf4j
public class ZimgController {

    @Autowired
    private ZimgUtils zimgUtils;

    /**
     * 上传附件
     * @param file
     * @return
     */
    @PostMapping(value = "/upload")
    public void uploadImage(MultipartFile file) {
        try {
            if (file.isEmpty()) {
                log.error(">>>>>>>>>>>>>>文件为空");
                return;
            }
            String s = zimgUtils.uploadImage(file);
            JSONObject object = JSONObject.parseObject(s);
            if (object.getBoolean("ret")){
                //成功
                JSONObject info = object.getJSONObject("info");
                log.info(">>>>>>>>> 文件md5：{},文件大小：{}",info.get("md5"),info.get("size"));
            }else {
                //失败
                JSONObject error = object.getJSONObject("error");
                log.error(">>>>>>>> 文件上传失败：{}",error.get("message"));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 删除文件
     * @param md5 上传成功后返回的md5
     * @return
     */
    @DeleteMapping(value = "/delete")
    public void deleteImage(String md5) {
        try {
            zimgUtils.deleteImage(md5);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}