springmvc图片文件上传接口

springmvc图片文件上传

用MultipartFile文件方式传输

Controller

package com.controller;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import javax.imageio.ImageIO;

import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
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.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import com.service.PictureService;
import com.utils.PictureUtils;
import com.entity.JsonResult;
import com.entity.SimpleJsonResult;

@Controller
public class PictureController {

    private static final Logger logger = Logger.getLogger(PictureController.class);

    @Resource
    private PictureService service;

    @Value("#{settings['picturePath']}")
    private String PATH;

    /**
     *
     * 图片文件上传接口
     *
     * @param files
     *            上传的文件图片数组
     * @param childPath
     *            子路径
     * */
    @RequestMapping(value = "baseSave", method = RequestMethod.POST)
    @ResponseBody
    public JsonResult save(@RequestParam(value = "file", required = false) MultipartFile[] files, String childPath) {
        SimpleJsonResult result = new SimpleJsonResult(); // 自定义的一个输出类
        if (files == null || files.length == 0) {
            return result.setExecption("失败");
        }

        for (MultipartFile file : files) {
            if (file.isEmpty())
                return result.setExecption("失败");

            try {
                if (ImageIO.read(file.getInputStream()) == null)
                    return result.setExecption(EXECPTION_0041);
            } catch (IOException e) {
                logger.error("图片文件读取失败");
            }
        }

        String name;
        int size = 0;
        List<String> url = new ArrayList<>();

        String paths = PATH;
        if (StringUtils.isNotBlank(childPath)) {

            if (childPath.equals(PictureUtils.HELPS) || childPath.equals(PictureUtils.NEWS)) {
                paths = paths + childPath + File.separator;

                File filePath = new File(paths);
                if (!filePath.exists())
                    filePath.mkdirs();
            }
        }

        for (MultipartFile file : files) {
            try {
                name = service.save(file, paths);
                size++;
                url.add(name);
            } catch (IOException e) {
                logger.error(e, e);
                return "失败";
            }
        }

        return SimpleJsonResult.buildSuccessResult(url).setModel("number", size);
    }

    @PostConstruct
    public void init() {
        File file = new File(PATH);
        file.setWritable(true, false);
        if (!file.exists())
            file.mkdirs();

        if (!file.canWrite()) {
            logger.error(file.getAbsolutePath() + ":文件夹没有权限创建");
            return;
        }

        logger.info("filePath:" + PATH);
    }
}

SimpleJsonResult 类格式

　　//SimpleJsonResult 类格式
   /** public static SimpleJsonResult buildFailedSimpleJsonResult(IExceptionCode code) {
        SimpleJsonResult result = new SimpleJsonResult();
        result.setSuccess(false);
        result.setMessage(code.getDescribe());
        result.setCode(code.getCode());
        return result;
    }

    public static SimpleJsonResult buildSuccessSimpleJsonResult(IExceptionCode code) {
        SimpleJsonResult result = new SimpleJsonResult();
        result.setSuccess(true);
        result.setMessage(code.getDescribe());
        result.setCode(code.getCode());
        return result;
    }

    public static SimpleJsonResult build() {
        SimpleJsonResult result = new SimpleJsonResult();
        return result;
    }

    public SimpleJsonResult setExecption(IExceptionCode code) {
        if (code.getCode().equals("0"))
            setSuccess(true);
        else
            setSuccess(false);

        this.code = code.getCode();
        setMessage(code.getDescribe());
        return this;
    };
*/

service类实现

package com.service;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Random;

import javax.annotation.Resource;
import javax.imageio.ImageIO;

import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import com.entity.Picture;
import com.mappers.PictureMapper;
import com.utils.PictureUtils;

@Service
public class PictureService {

    @Resource
    private PictureMapper mapper;

    private String no = "TP";

    @Transactional(timeout = 3000)
    public String save(MultipartFile file, String path) throws IOException {
        //Picture width and height
        BufferedImage bff =ImageIO.read(file.getInputStream());
        Picture entity = new Picture(); //实体类
        String fileName = file.getOriginalFilename();

        String name = this.getName(fileName, file.getSize());
        name = PictureUtils.save(file, path, name); //图片保存到服务器地址中

        entity.setOriginal(fileName); // 上传的名称
        entity.setName(name); // 名称
        entity.setWidth(bff.getWidth()); // 宽
        entity.setHeight(bff.getHeight()); //高
        mapper.insert(entity); //添加进去
        return name;
    }

    private String getName(String fileName, long size) { //重命名
        StringBuilder sb = new StringBuilder();
        String[] split = fileName.split("\\.");

        String suffix = split[split.length - 1];

        sb.append(fileName).append(System.currentTimeMillis()).append(new Random().nextFloat())
                .append(Thread.currentThread().getId());
        String name = DigestUtils.md2Hex(sb.toString()).toUpperCase();
        return sb.delete(0, sb.length()).append(no).append(name).append(".").append(suffix).toString();
    }
}

PictureUtils 图片保存工具类

package com.utils;

import java.io.IOException;

import org.springframework.web.multipart.MultipartFile;

import net.coobird.thumbnailator.Thumbnails;

public class PictureUtils {

    public static long SIZE = 100L << 10;

    public static String SUFFIX_JPG = "jpg";

    public static String NEWS = "news";

    public static String HELPS = "helps";
//保存图片
    public static String save(MultipartFile file, String path, String name) throws IOException {
        int i = 1;
        long size = file.getSize();

        Thumbnails.of(file.getInputStream()).scale(1).outputQuality(1f)
                .toFile(path + i + "_" + name);

        if (size > SIZE) {
            float ratio = 1.0f / (float) (size / SIZE);

            ++i;
            Thumbnails.of(file.getInputStream()).scale(1).outputQuality(ratio)
                    .toFile(path + i + "_" + name);
        }

        return i + "_" + name;
    }
// 设置宽高保存
    public static String save(MultipartFile file, String path, String name, int width, int heigth, boolean compresseion)
            throws IOException {
        int i = 1;
        long size = file.getSize();

        Thumbnails.of(file.getInputStream()).size(width, heigth).outputQuality(1f)
                .toFile(path + i + "_" + name);

        if (size > SIZE) {
            float ratio = 1f / (float) (size / SIZE);

            ++i;
            Thumbnails.of(file.getInputStream()).size(width, heigth).outputQuality(ratio)
                    .toFile(path + i + "_" + name);
        }

        return i + "_" + name;
    }

}

实体类

package com.entity;

public class Picture {

    private static final long serialVersionUID = 1L;

    @Column
    private String original;

    @Column
    private String name;

    @Column
    private Integer width;

    @Column
    private Integer height;

    public Picture() {
        super();
    }
}

配置文件

No=TP
jpg=.jpg
picturePath=/picture/

偶遇晨光

2016-05-30