controller
1 package cn.lntop.controller.test; 2 3 import java.util.ArrayList; 4 import java.util.HashMap; 5 import java.util.List; 6 import java.util.Map; 7 8 import javax.servlet.http.HttpServletRequest; 9 10 import org.apache.commons.lang3.StringUtils;11 import org.springframework.beans.factory.annotation.Autowired;12 import org.springframework.beans.factory.annotation.Value;13 import org.springframework.stereotype.Controller;14 import org.springframework.ui.ModelMap;15 import org.springframework.web.bind.annotation.RequestMapping;16 import org.springframework.web.bind.annotation.RequestMethod;17 import org.springframework.web.bind.annotation.ResponseBody;18 19 import cn.lntop.util.ReturnUtil;20 import tk.mybatis.mapper.util.StringUtil;21 22 @Controller23 @RequestMapping("/test")24 public class TestController {25 26 /**27 * 取得电脑信息28 * @param request29 * @return30 */31 @RequestMapping(value="/test/comInfo", method = {RequestMethod.GET})32 public ModelMap getTestInfo(HttpServletRequest request) {33 // 取得URL后的参数34 String comId = request.getParameter("comId");35 Map param = new HashMap ();36 param.put("comId", comId)37 // 查询电脑基本信息步骤--略38 ComInfo com = comService.selectComInfo(param); 39 try {40 // 取得图片所在位置41 String imgPath = this.getClass().getResource("/").getPath() + "/" + com.getImageName();42 // 将图片转化为base6443 String base64 = ImgBase64Util.getImgStr(imgPath);44 // 拼接图片头45 String head = headFile(imgPath);46 com.setHeadData(head + base64);47 } catch (Exception e) {48 e.printStackTrace();49 }50 ModelMap map = new ModelMap();51 map.put("com", com);52 return ReturnUtil.Success("操作成功", map, null);53 }54 55 /**56 * 拼接Base64头信息57 * @param urlString58 */59 public String headFile(String urlString) {60 String head = "";61 String type = urlString.substring(urlString.lastIndexOf('.') + 1);62 if ("png".equals(type)) {63 head = "data:image/png;base64,";64 } else if ("jpg".equals(type)) {65 head = "data:image/jpg;base64,";66 } else if ("jpeg".equals(type)) {67 head = "data:image/jpeg;base64,";68 } else {69 head = "data:image/jpg;base64,";70 }71 return head;72 }73 74 } Base64工具类
1 package cn.test.util; 2 3 import java.io.FileInputStream; 4 import java.io.FileOutputStream; 5 import java.io.IOException; 6 import java.io.InputStream; 7 import java.io.OutputStream; 8 9 import org.apache.commons.codec.binary.Base64;10 11 12 /**13 * 将图片转换为Base6414 * 将base64编码字符串解码成img图片15 *16 */17 public class ImgBase64Util {18 19 /**20 * 将图片转换成Base64编码21 * @param imgFile 待处理图片22 * @return23 */24 public static String getImgStr(String imgFile){25 26 InputStream in = null;27 byte[] data = null;28 //读取图片字节数组29 try 30 {31 in = new FileInputStream(imgFile); 32 data = new byte[in.available()];33 in.read(data);34 in.close();35 } 36 catch (IOException e) 37 {38 e.printStackTrace();39 }40 return new String(Base64.encodeBase64(data));41 }42 43 /**44 * 对字节数组字符串进行Base64解码并生成图片45 * @param imgStr 图片数据46 * @param imgFilePath 保存图片全路径地址47 * @return48 */49 public static boolean generateImage(String imgStr,String imgFilePath){50 //51 if (imgStr == null) //图像数据为空52 return false;53 54 try 55 {56 //Base64解码57 byte[] b = Base64.decodeBase64(imgStr);58 for(int i=0;i 返回thymeleaf格式
1 package cn.test.util; 2 3 import org.apache.commons.lang3.StringUtils; 4 import org.springframework.ui.ModelMap; 5 6 /** 7 * JSON统一返回数据格式 8 9 */10 public class ReturnUtil {11 12 public static ModelMap Success(String msg, Object obj, String referer) {13 msg = StringUtils.isEmpty(msg) || StringUtils.isBlank(msg) ? "操作成功" : msg;14 ModelMap mp = new ModelMap();15 mp.put("status", 1);16 mp.put("state", "success");17 mp.put("msg", msg);18 mp.put("referer", referer);19 mp.put("result", obj);20 return mp;21 }22 23 public static ModelMap Success(String msg, Object obj) {24 msg = StringUtils.isEmpty(msg) || StringUtils.isBlank(msg) ? "操作成功" : msg;25 ModelMap mp = new ModelMap();26 mp.put("status", 1);27 mp.put("state", "success");28 mp.put("msg", msg);29 mp.put("referer", null);30 mp.put("result", obj);31 return mp;32 }33 public static ModelMap Success(String msg) {34 msg = StringUtils.isEmpty(msg) || StringUtils.isBlank(msg) ? "操作成功" : msg;35 ModelMap mp = new ModelMap();36 mp.put("status", 1);37 mp.put("state", "success");38 mp.put("msg", msg);39 mp.put("referer", null);40 mp.put("result", null);41 return mp;42 }43 44 public static ModelMap Error(String msg, Object obj, String referer) {45 msg = StringUtils.isEmpty(msg) || StringUtils.isBlank(msg) ? "操作失败" : msg;46 ModelMap mp = new ModelMap();47 mp.put("status", 0);48 mp.put("state", "error");49 mp.put("msg", msg);50 mp.put("referer", referer);51 mp.put("result", obj);52 return mp;53 }54 55 public static ModelMap Error(String msg, Object obj) {56 msg = StringUtils.isEmpty(msg) || StringUtils.isBlank(msg) ? "操作失败" : msg;57 ModelMap mp = new ModelMap();58 mp.put("status", 0);59 mp.put("state", "error");60 mp.put("msg", msg);61 mp.put("referer", null);62 mp.put("result", obj);63 return mp;64 }65 66 public static ModelMap Error(String msg) {67 msg = StringUtils.isEmpty(msg) || StringUtils.isBlank(msg) ? "操作失败" : msg;68 ModelMap mp = new ModelMap();69 mp.put("status", 0);70 mp.put("state", "error");71 mp.put("msg", msg);72 mp.put("referer", null);73 mp.put("result", null);74 return mp;75 }76 } thymeleaf页面
1 2 3 4 56 7 8 9 10 11 12 13 14 桌面图片15 16 17