ssm框架之将数据库的数据导入导出为excel文件

利用poi实现数据库的数据导入导出excel文件

在这里首先我要将自己遇到的各种问题,以及需求记录下来,做一个备忘,便于以后查看:

需求:主要实现两个功能,将oracle数据库里的数据导出为excel,同时需要将excel表格的数据导入到数据库

环境:springmvc + spring + mybatis + jdk1.7 + poi3.8 + easyui + oracle

在开始的时候,我就各种找jar包搭建环境,搭建环境时候所有的jar包都没有,只能去各种找,去下载,话不多说,直接上jar包,

然后就是各种配置文件,将配置文件现在直接贴出来:

《 applicationContext-dao.xml 》:

 1 xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3 xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
 4 xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 6 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
 7 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
 8 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
 9 http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
10 
11 
12 <context:property-placeholder location="classpath:db.properties" />
13 
14 
15 <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
16 
17 <property name="driverClassName" value="${jdbc.driver}" />
18 
19 <property name="url" value="${jdbc.url}" />
20 
21 <property name="username" value="${jdbc.username}" />
22 
23 <property name="password" value="${jdbc.password}" />
24 bean>
25 
26 
27 
28 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
29 
30 <property name="dataSource" ref="dataSource" />
31 <property name="typeAliasesPackage" value="com.sword.dataprocess.pojo">property>
32 bean>
33 
34 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
35 <property name="basePackage" value="com.sword.dataprocess.mapper"/>
36 bean>
37 
38 beans>
39 
40  

 

《 applicationContext-service.xml 》:

 1 xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3 xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
 4 xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 6 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
 7 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
 8 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
 9 http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
10 
11 <context:component-scan base-package="com.sword.dataprocess.service"/>
12 
13 
14 <bean id="transactionManager"
15 class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
16 
17 <property name="dataSource" ref="dataSource" />
18 bean> 
19 
20 <tx:advice id="txAdvice" transaction-manager="transactionManager">
21 <tx:attributes>
22 
23 <tx:method name="save*" propagation="REQUIRED" />
24 <tx:method name="insert*" propagation="REQUIRED" />
25 <tx:method name="delete*" propagation="REQUIRED" />
26 <tx:method name="update*" propagation="REQUIRED" />
27 <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
28 <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
29 tx:attributes>
30 tx:advice> 
31 
32 <aop:config>
33 <aop:advisor advice-ref="txAdvice"
34 pointcut="execution(* com.sword.dataprocess.service*.*.*(..))" />
35 aop:config>
36 beans>

 

 

数据库的连接信息:

  《 db.properties 》:

1 jdbc.dbType=oracle
2 jdbc.driver=oracle.jdbc.driver.OracleDriver
3 jdbc.url=jdbc:oracle:thin:@远程的连接ip:orcl
4 jdbc.username=xxx
5 jdbc.password=xxx

 

日志文件:

  《log4j.properties 》: 这里不再贴出

springmvc的xml:

  《springmvc.xml》:

  

 1 <beans xmlns="http://www.springframework.org/schema/beans"
 2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
 3 xmlns:context="http://www.springframework.org/schema/context"
 4 xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 5 xmlns:task="http://www.springframework.org/schema/task"
 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7 http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
 8 http://www.springframework.org/schema/mvc 
 9 http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd 
10 http://www.springframework.org/schema/context 
11 http://www.springframework.org/schema/context/spring-context-4.2.xsd 
12 http://www.springframework.org/schema/aop 
13 http://www.springframework.org/schema/aop/spring-aop-4.2.xsd 
14 http://www.springframework.org/schema/tx 
15 http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
16 http://www.springframework.org/schema/task
17 http://www.springframework.org/schema/task/spring-task-4.2.xsd">
18 
19 
20 
21 <context:component-scan base-package="com.sword.dataprocess.controller" />
22 
23 <mvc:annotation-driven />
24 
25 
26 <mvc:resources location="/css/" mapping="/css/**" />
27 <mvc:resources location="/js/" mapping="/js/**" />
28 <mvc:resources location="/plugins/" mapping="/plugins/**" />
29 
30 
31 <bean id="jspViewResolver"
32 class="org.springframework.web.servlet.view.InternalResourceViewResolver">
33 <property name="prefix" value="/WEB-INF/jsp/" />
34 <property name="suffix" value=".jsp" />
35 bean>
36 
37 
38 <bean id="multipartResolver"
39 class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
40 <property name="defaultEncoding" value="UTF-8"/>
41 
42 <property name="maxUploadSize">
43 <value>5242880value>
44 property>
45 bean>
46 
47 beans>

 

 最后最重要的就是web.xml :

  《web.xml 》:

 1 xml version="1.0" encoding="UTF-8"?>
 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
 3 <display-name>DataProcessdisplay-name>
 4 <welcome-file-list>
 5 <welcome-file>index.htmlwelcome-file>
 6 <welcome-file>index.htmwelcome-file>
 7 <welcome-file>index.jspwelcome-file>
 8 <welcome-file>default.htmlwelcome-file>
 9 <welcome-file>default.htmwelcome-file>
10 <welcome-file>default.jspwelcome-file>
11 welcome-file-list>
12 
13 <listener>
14 <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
15 listener>
16 <context-param>
17 <param-name>contextConfigLocationparam-name>
18 <param-value>classpath:applicationContext-*.xmlparam-value>
19 context-param>
20 
21 
22 <servlet>
23 <servlet-name>springmvcservlet-name>
24 <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
25 
26 <init-param>
27 <param-name>contextConfigLocationparam-name>
28 <param-value>classpath:springmvc.xmlparam-value>
29 init-param>
30 servlet>
31 <servlet-mapping>
32 <servlet-name>springmvcservlet-name>
33 <url-pattern>/url-pattern>
34 servlet-mapping>
35 web-app>

 

前端主要使用的是easyui里面的datagried :大致页面如下:

ssm框架之将数据库的数据导入导出为excel文件_第1张图片

然后就是把jsp页面的代码贴出来:

  《index.jsp》:

  1 <%@ page language="java" contentType="text/html; charset=UTF-8"
  2 pageEncoding="UTF-8"%>
  3 
  4 
  5 
  6 
  7 MRP导入导出
  8 
  9 
 10 
 11 
 12 
 13 
 14 
 15 
 16 
 17 
 18 
 19 
 20 
 21 
121 
122 
123 
124
125
126 127

 

 接下来就是代码的实现:

  《controller层》:

 1 import java.io.File;
 2 import java.io.FileInputStream;
 3 import java.util.List;
 4 import java.util.Map;
 5 
 6 import javax.servlet.ServletOutputStream;
 7 import javax.servlet.http.HttpServletRequest;
 8 import javax.servlet.http.HttpServletResponse;
 9 
10 import org.apache.commons.fileupload.disk.DiskFileItem;
11 import org.springframework.beans.factory.annotation.Autowired;
12 import org.springframework.stereotype.Controller;
13 import org.springframework.ui.Model;
14 import org.springframework.web.bind.annotation.RequestMapping;
15 import org.springframework.web.bind.annotation.ResponseBody;
16 import org.springframework.web.context.request.RequestContextHolder;
17 import org.springframework.web.context.request.ServletRequestAttributes;
18 import org.springframework.web.multipart.MultipartFile;
19 import org.springframework.web.multipart.MultipartHttpServletRequest;
20 import org.springframework.web.multipart.commons.CommonsMultipartFile;
21 
22 import com.sword.dataprocess.pojo.DataProcess;
23 import com.sword.dataprocess.service.DataService;
24 import com.sword.dataprocess.utils.FileUtils;
25 
26 @Controller
27 public class DataController {
28 
29 @Autowired
30 private DataService dataService;
31 
32 @RequestMapping(value={"/index","/index.html","/index.htm"})
33 public String index(){
34 return "index";
35 }
36 
37 @RequestMapping("/show")
38 @ResponseBody
39 public List show(Model model){
40 List list = dataService.findAll();
41 model.addAttribute("list", list);
42 return list; 
43 } 
44 
45 // 文件导出
46 @RequestMapping("/export")
47 public void exportXls(HttpServletRequest request,HttpServletResponse response) throws Exception{
48 // 一个流
49 // 两个头
50 // 下载文件的mime类型
51 response.setContentType("application/vnd.ms-excel"); // 常见的文件 可以省略
52 
53 // 文件的打开方式 inline在线打开 attachment
54 String agent = request.getHeader("User-Agent");
55 String filename = FileUtils.encodeDownloadFilename("data.xlsx", agent);
56 response.setHeader("content-disposition", "attachment;fileName="+filename);
57 ServletOutputStream outputStream = response.getOutputStream();
58 
59 // 获取模板 在当前项目
60 ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();
61 String templatePath = request.getServletContext().getRealPath(File.separator)+"temp"+File.separator+"data.xlsx";
62 System.out.println(templatePath);
63 FileInputStream fileInputStream = new FileInputStream(templatePath);
64 
65 dataService.exportAls(fileInputStream, outputStream);
66 }
67 
68 
69 //    文件导入
70 //接收页面传来的文件
71 @RequestMapping("/import")
72 @ResponseBody
73 public String importXlsx(HttpServletRequest request){
74 System.out.println(111);
75 MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
76 MultipartFile myFile = multipartRequest.getFile("myFile"); // 通过参数名获取指定文件 文件本身 变量名和文件上传时的名称保持一致
77 String myFileFileName = myFile.getOriginalFilename();//文件的名字
78 String myFileContentType = myFile.getContentType(); //文件的mime类型
79 
80 CommonsMultipartFile cf= (CommonsMultipartFile)myFile; 
81 DiskFileItem fi = (DiskFileItem)cf.getFileItem();
82 
83 File f = fi.getStoreLocation();
84 String msg = null;
85 
86 Boolean    flag = dataService.importXls(f,myFileContentType);
87 if(flag){
88 msg = "success";
89 }else{
90 msg = "error";
91 }
92 return msg;    
93 }
94 
95 
96 }

 

《service层》:

  1 import java.io.File;
  2 import java.io.FileInputStream;
  3 import java.io.IOException;
  4 import java.text.SimpleDateFormat;
  5 import java.util.Date;
  6 import java.util.List;
  7 
  8 import javax.servlet.ServletOutputStream;
  9 
 10 import org.apache.commons.lang3.StringUtils;
 11 import org.apache.poi.hssf.usermodel.HSSFRow;
 12 import org.apache.poi.hssf.usermodel.HSSFSheet;
 13 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
 14 import org.apache.poi.xssf.usermodel.XSSFCell;
 15 import org.apache.poi.xssf.usermodel.XSSFRow;
 16 import org.apache.poi.xssf.usermodel.XSSFSheet;
 17 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 18 import org.springframework.beans.factory.annotation.Autowired;
 19 import org.springframework.stereotype.Service;
 20 
 21 import com.sword.dataprocess.mapper.DataMapper;
 22 import com.sword.dataprocess.pojo.DataProcess;
 23 import com.sword.dataprocess.service.DataService;
 24 
 25 @Service
 26 public class DataServiceImpl implements DataService{
 27 @Autowired
 28 private DataMapper dataMapper;
 29 
 30 @Override
 31 public int dataCount() {
 32 return dataMapper.dataCount();
 33 }
 34 
 35 @Override 
 36 public void exportAls(FileInputStream fileInputStream, ServletOutputStream outputStream) {
 37 // Workbook工作簿
 38 XSSFWorkbook book = null;
 39 try {
 40 book = new XSSFWorkbook(fileInputStream);
 41 } catch (IOException e) {
 42 e.printStackTrace();
 43 }
 44 
 45 // 工作表 sheet
 46 XSSFSheet sheet = book.getSheetAt(0); 
 47 // 获取第二个sheet中的第一行第一列的样式 及边框
 48 //    XSSFCellStyle cellStyle = book.getSheetAt(1).getRow(0).getCell(0).getCellStyle();
 49 List list = dataMapper.findAll();
 50 System.out.println(list.size());
 51 int rowIndex = 1; // 让表格从第二行开始导入
 52 XSSFCell cell = null;
 53 for (DataProcess dataProcess : list) {
 54 // 新建一行
 55 XSSFRow row = sheet.createRow(rowIndex);
 56 cell = row.createCell(0); // 第一个单元格
 57 //    设定已经准备好单元格的样式
 58 //    cell.setCellStyle(cellStyle);
 59 String id = dataProcess.getP_id();
 60 if(id != null){
 61 cell.setCellValue(id);
 62 }
 63 
 64 cell = row.createCell(1); // 第一个单元格
 65 String name = dataProcess.getP_name();
 66 if(name != null){
 67 cell.setCellValue(name);
 68 }
 69 
 70 cell = row.createCell(2); // 第二个单元格
 71 String guige = dataProcess.getP_guige();
 72 if(guige != null){
 73 cell.setCellValue(guige);
 74 }
 75 
 76 cell = row.createCell(3); // 第三个单元格
 77 String xdata = dataProcess.getP_xdata();
 78 if(xdata != null){
 79 cell.setCellValue(xdata);
 80 }
 81 
 82 cell = row.createCell(4); // 第四个单元格
 83 String jdate = dataProcess.getP_jdate();
 84 if(jdate != null){
 85 cell.setCellValue(jdate);
 86 }
 87 
 88 /*cell = row.createCell(5); // 第五个单元格
 89 Integer sourceCount = dataProcess.getP_sourceCount();
 90 if(sourceCount != null){
 91 cell.setCellValue(sourceCount);
 92 }*/
 93 cell = row.createCell(6); // 第六个单元格
 94 Integer descCount = dataProcess.getP_descCount();
 95 if (descCount != null) {
 96 cell.setCellValue(descCount);
 97 }
 98 
 99 rowIndex++;
100 }
101 // 把工作簿放在输出流中
102 try {
103 book.write(outputStream);
104 } catch (IOException e) {
105 e.printStackTrace();
106 }
107 }
108 
109 // 导入数据
110 @Override
111 public Boolean importXls(File myFile, String myFileContentType) {
112 
113 if ("application/vnd.ms-excel".equals(myFileContentType)) {
114 System.out.println(123);
115 try {
116 // 获取workbook工作簿
117 HSSFWorkbook hssfWorkbook = new HSSFWorkbook(new FileInputStream(myFile));
118 // 获取sheet 工作表
119 HSSFSheet sheet = hssfWorkbook.getSheetAt(0);
120 // 获取工作表的最后一行索引
121 int lastRowNum = sheet.getLastRowNum();
122 for (int i = 1; i <= lastRowNum; i++) {
123 DataProcess dataProcess = new DataProcess();
124 HSSFRow row = sheet.getRow(i);
125 // 料件编号 特征码(8个0)行动日期 交货日期 排产数量 版本号(一次导入只用设置一个相同的值就行) 已执行步骤为0
126 
127 // 料件编号
128 String p_id = row.getCell(0).getStringCellValue();
129 dataProcess.setP_id(p_id);
130 // 行动日期
131 String p_xdata = row.getCell(3).getStringCellValue();
132 dataProcess.setP_xdata(p_xdata);;
133 // 交货日期 
134 String p_jdate = row.getCell(4).getStringCellValue();
135 dataProcess.setP_jdate(p_jdate);
136 /*//    需求数量
137 Integer p_sourceCount = (int) row.getCell(5).getNumericCellValue();
138 dataProcess.setP_sourceCount(p_sourceCount);*/
139 // 排产数量
140 Integer p_descCount = (int) row.getCell(5).getNumericCellValue();
141 dataProcess.setP_descCount(p_descCount);
142 //    版本号(一次导入只用设置一个相同的值就行)
143 SimpleDateFormat tempDate = new SimpleDateFormat("yyyy-MM-dd"); 
144 String datetime = tempDate.format(new Date()); 
145 String p_version = "MRPVERNO"+datetime;
146 dataProcess.setP_version(p_version);
147 // 向tc_aau_file表插入数据
148 dataMapper.insertdata(dataProcess);
149 // 向tc_aat_file表插入数据
150 if(i==lastRowNum){
151 dataMapper.insertToAAT(p_version);
152 }
153 }
154 } catch (Exception e) {
155 e.printStackTrace();
156 return false;
157 }
158 
159 } else if ("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet".equals(myFileContentType)) {
160 try {
161 // 获取workbook工作簿
162 XSSFWorkbook xssfWorkbook = new XSSFWorkbook(new FileInputStream(myFile));
163 // 获取sheet 工作表
164 XSSFSheet sheet = xssfWorkbook.getSheetAt(0);
165 // 获取工作表的最后一行索引
166 int lastRowNum = sheet.getLastRowNum();
167 for (int i = 1; i <= lastRowNum; i++) {
168 DataProcess dataProcess = new DataProcess();
169 XSSFRow row = sheet.getRow(i);
170 // 料件编号 特征码(8个0)行动日期 交货日期 排产数量 版本号(一次导入只用设置一个相同的值就行) 已执行步骤为0
171 
172 // 料件编号
173 String p_id = row.getCell(0).getStringCellValue();
174 dataProcess.setP_id(p_id);
175 // 行动日期
176 String p_xdata = row.getCell(3).getStringCellValue();
177 dataProcess.setP_xdata(p_xdata);
178 // 交货日期 
179 String p_jdate = row.getCell(4).getStringCellValue();
180 dataProcess.setP_jdate(p_jdate);
181 
182 /*//    需求数量
183 Integer p_sourceCount = (int) row.getCell(5).getNumericCellValue();
184 dataProcess.setP_sourceCount(p_sourceCount);*/
185 // 排产数量
186 Integer p_descCount = (int) row.getCell(5).getNumericCellValue();
187 dataProcess.setP_descCount(p_descCount);
188 //    版本号(一次导入只用设置一个相同的值就行)
189 SimpleDateFormat tempDate = new SimpleDateFormat("yyyy-MM-dd"); 
190 String datetime = tempDate.format(new Date()); 
191 String p_version = "MRPVERNO"+datetime;
192 dataProcess.setP_version(p_version);
193 
194 // 向tc_aau_file表插入数据
195 dataMapper.insertdata(dataProcess);
196 // 向tc_aat_file表插入数据
197 if(i==lastRowNum){
198 dataMapper.insertToAAT(p_version);
199 }
200 }
201 }catch (Exception e) {
202 e.printStackTrace();
203 return false;
204 }
205 } // elseif 结束
206 return true;
207 }
208 
209 
210 //    查询所有数据
211 @Override
212 public List findAll() {
213 List result = dataMapper.findAll();
214 return result;
215 }
216 }

 

《mapper 层》:

 1 import java.util.List;
 2 
 3 import org.apache.ibatis.annotations.Param;
 4 
 5 import com.sword.dataprocess.pojo.DataProcess;
 6 
 7 public interface DataMapper {
 8 public int dataCount();
 9 
10 public List findAll();
11 
12 public void insertdata(@Param("dataProcess")DataProcess dataProcess);
13 
14 public void insertToAAT(@Param("p_version")String p_version);
15 }

 

《对应的xml:》: 

 1 xml version="1.0" encoding="UTF-8" ?>
 2 DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 3 <mapper namespace="com.sword.dataprocess.mapper.DataMapper" >
 4 
 5 <select id="dataCount" resultType="int">
 6 select count(1) from tc_aau_file
 7 select>
 8 
 9 
10 <resultMap type="dataProcess" id="datdProcessMap">
11 <id column="tc_aau01" property="p_id"/>
12 <result column="IMA02" property="p_guige"/>
13 <result column="ima021" property="p_name"/>
14 <result column="TC_AAU06" property="p_xdata"/>
15 <result column="TC_AAU07" property="p_jdate"/>
16 <result column="TC_AAU09" property="p_descCount"/>
17 resultMap>
18 
19 <select id="findAll" resultMap="datdProcessMap">
20 select t.TC_AAU01 , 
21 i.IMA02 ,
22 i.ima021 , 
23 t.TC_AAU06 ,
24 t.TC_AAU07 ,
25 t.TC_AAU09 
26 from SWORD.IMA_FILE i, SWORD.TC_AAU_FILE t where i.ima01 = t.tc_aau01
27 select>
28 
29 <insert id="insertdata" parameterType="dataProcess">
30 INSERT INTO SWORD.TC_AAU_FILE ("TC_AAU01", "TC_AAU03", "TC_AAU06", "TC_AAU07", "TC_AAU09", "TC_AAU13", "TC_AAU14") VALUES (#{dataProcess.p_id}, '00000000', TO_DATE(#{dataProcess.p_xdata}, 'SYYYY-MM-DD HH24:MI:SS'), TO_DATE(#{dataProcess.p_jdate}, 'SYYYY-MM-DD HH24:MI:SS'),#{dataProcess.p_descCount}, #{dataProcess.p_version}, '0')
31 insert>
32 
33 <insert id="insertToAAT" parameterType="string">
34 INSERT INTO SWORD.TC_AAT_FILE ("TC_AAT01") VALUES (#{p_version}) 
35 insert>
36 
37 mapper>

用到了一个工具类(fileutils):

 1 import java.io.IOException;
 2 import java.net.URLEncoder;
 3 
 4 import sun.misc.BASE64Encoder;
 5 
 6 public class FileUtils {
 7 /**
 8 * 下载文件时,针对不同浏览器,进行附件名的编码
 9 * 
10 * @param filename
11 * 下载文件名
12 * @param agent
13 * 客户端浏览器
14 * @return 编码后的下载附件名 
15 * @throws IOException
16 */
17 public static String encodeDownloadFilename(String filename, String agent)
18 throws IOException {
19 if (agent.contains("Firefox")) { // 火狐浏览器
20 filename = "=?UTF-8?B?"
21 + new BASE64Encoder().encode(filename.getBytes("utf-8"))
22 + "?=";
23 filename = filename.replaceAll("\r\n", "");
24 } else { // IE及其他浏览器
25 filename = URLEncoder.encode(filename, "utf-8");
26 filename = filename.replace("+"," ");
27 }
28 return filename;
29 }
30 }

 遇到的问题:

  1.在springmvc.xml配置了前端静态资源不拦截之后,在显示前端界面时候,总是报一个错:不能够找到各种静态文件,无论我怎么设置,就是获取不到,而且在项目启动之后,直接访问对应的页面,是可以正常显示的,然后一通过视图解析器就获取不到静态资源,不能够正常显示,最终各种查资料,都显示的是没有配置忽略前端静态资源文件,解决不了问题,最后我处理了很久,终于发现自己犯了一个大错,就是将静态资源的导入时候,写的是相对路径,找不到对应的文件,最终解决办法就是写的动态获取的全路径。

  2.遇到的第二个问题:我在导入的时候封装了一个对象,在mapper那里传入了一个对象,但是在对应的xml里面我取不到对象里面的属性值,最终查阅资料,需要在传的对象前面添加一个@param(”xxx“)注解,问题得以解决。

GitHub源码地址:https://github.com/Dingzhaoming/DataProcess

后续会继续补充,未经允许不得转载,欢迎大家多多指正!

转载于:https://www.cnblogs.com/dingzhaoming/p/8549147.html

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