文件上傳 - CommonsMultipartFile

時間 2019-12-18

標籤文件上傳 commonsmultipartfile 简体版

原文原文鏈接

1、jar包

使用 springMVC 的 CommonsMultipartFile 類讀取文件，實現文件上傳。
須要使用文件上傳的2個jar包：Commons-logging.jar、commons-io-xxx.jarto。
經過 Maven 管理項目能夠直接使用 pom.xml 配置，在線下載須要的 jar 包，包括 spring 框架和 SSM 整合。
pom.xmljavascript

  1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  2   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  3   <modelVersion>4.0.0</modelVersion>
  4   <groupId>com.project</groupId>
  5   <artifactId>FileUpload</artifactId>
  6   <packaging>war</packaging>
  7   <version>0.0.1-SNAPSHOT</version>
  8   <name>FileUpload Maven Webapp</name>
  9   <url>http://maven.apache.org</url>
 10   <dependencies>
 11     <dependency>
 12       <groupId>junit</groupId>
 13       <artifactId>junit</artifactId>
 14       <version>3.8.1</version>
 15       <scope>test</scope>
 16     </dependency>
 17    
 18    <!-- fileUpload -->
 19     <dependency>
 20         <groupId>commons-io</groupId>
 21         <artifactId>commons-io</artifactId>
 22         <version>2.5</version>
 23     </dependency>
 24     
 25     <dependency>
 26         <groupId>commons-fileupload</groupId>
 27         <artifactId>commons-fileupload</artifactId>
 28         <version>1.3.2</version>
 29     </dependency>
 30     
 31       <!--spring-->
 32    <dependency>
 33         <groupId>org.springframework</groupId>
 34         <artifactId>spring-core</artifactId>
 35         <version>4.2.3.RELEASE</version>
 36     </dependency>
 37     
 38     <dependency>
 39         <groupId>org.springframework</groupId>
 40         <artifactId>spring-context</artifactId>
 41         <version>4.2.3.RELEASE</version>
 42     </dependency>
 43     
 44     <dependency>
 45         <groupId>org.springframework</groupId>
 46         <artifactId>spring-context-support</artifactId>
 47         <version>4.2.3.RELEASE</version>
 48     </dependency>
 49 
 50     <dependency>
 51         <groupId>org.springframework</groupId>
 52         <artifactId>spring-beans</artifactId>
 53         <version>4.2.3.RELEASE</version>
 54     </dependency>
 55     
 56     <dependency>
 57         <groupId>org.springframework</groupId>
 58         <artifactId>spring-aop</artifactId>
 59         <version>4.2.3.RELEASE</version>
 60     </dependency>
 61     
 62     <dependency>
 63         <groupId>org.aspectj</groupId>
 64         <artifactId>aspectjweaver</artifactId>
 65         <version>1.6.8</version>
 66     </dependency>
 67 
 68     <dependency>
 69         <groupId>org.springframework</groupId>
 70         <artifactId>spring-tx</artifactId>
 71         <version>4.2.3.RELEASE</version>
 72     </dependency>
 73     
 74     <dependency>
 75         <groupId>org.springframework</groupId>
 76         <artifactId>spring-orm</artifactId>
 77         <version>4.2.3.RELEASE</version>
 78     </dependency>
 79     
 80     <dependency>
 81         <groupId>org.springframework</groupId>
 82         <artifactId>spring-jdbc</artifactId>
 83         <version>4.2.3.RELEASE</version>
 84     </dependency>
 85 
 86  <dependency>
 87       <groupId>org.springframework</groupId>
 88       <artifactId>spring-web</artifactId>
 89       <version>4.2.3.RELEASE</version>
 90     </dependency>
 91     <dependency>
 92       <groupId>org.springframework</groupId>
 93       <artifactId>spring-webmvc</artifactId>
 94       <version>4.2.3.RELEASE</version>
 95     </dependency>
 96     
 97     <!-- mybatis -->
 98     <dependency>
 99         <groupId>org.mybatis</groupId>
100         <artifactId>mybatis</artifactId>
101         <version>3.2.2</version>
102     </dependency>
103     
104     <dependency>
105         <groupId>org.mybatis</groupId>
106         <artifactId>mybatis-spring</artifactId>
107         <version>1.1.1</version>
108     </dependency>
109     
110         
111     <!--log4j-->
112      <dependency>
113         <groupId>log4j</groupId>
114         <artifactId>log4j</artifactId>
115         <version>1.2.17</version>
116     </dependency>
117     
118     <!--mysql driver-->
119     <dependency>
120         <groupId>mysql</groupId>
121         <artifactId>mysql-connector-java</artifactId>
122         <version>5.1.17</version>
123     </dependency>
124     
125     <!--dbcp-->
126     <dependency>
127         <groupId>org.apache.commons</groupId>
128         <artifactId>commons-dbcp2</artifactId>
129         <version>2.1.1</version>
130     </dependency>
131     
132     
133   </dependencies>
134   <build>
135     <finalName>FileUpload</finalName>
136   </build>
137 </project>

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2、文件上傳解析器

app-action.xmlhtml

<?xml version="1.0" encoding="UTF-8"?>
<beans  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:p="http://www.springframework.org/schema/p"
        xmlns="http://www.springframework.org/schema/beans"
        xmlns:aop="http://www.springframework.org/schema/aop"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xmlns:jpa="http://www.springframework.org/schema/data/jpa"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
                             http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
                            http://www.springframework.org/schema/data/jpa 
                            http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
                            http://www.springframework.org/schema/tx 
                            http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
                            http://www.springframework.org/schema/context
                            http://www.springframework.org/schema/context/spring-context-4.0.xsd
                            http://www.springframework.org/schema/aop
                            http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
                            http://www.springframework.org/schema/mvc   
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    
    <!--提供註解和驗證支持  -->
    <mvc:annotation-driven conversion-service="typeChange"></mvc:annotation-driven>
    <!--類型轉換器  -->
    <bean id="typeChange" class="org.springframework.context.support.ConversionServiceFactoryBean">
        <property name="converters">
            <set>
                <bean class="com.project.util.DateChange"></bean>
            </set>
        </property>
    </bean>
    <!--文件上傳的支持類 ,id必須爲multipartResolver-->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"></bean>    
    <!--掃描指定包中的spring組件  -->
    <context:component-scan base-package="com.project.action"></context:component-scan>
</beans>

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 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3         xmlns:p="http://www.springframework.org/schema/p"
 4         xmlns="http://www.springframework.org/schema/beans"
 5         xmlns:aop="http://www.springframework.org/schema/aop"
 6         xmlns:context="http://www.springframework.org/schema/context"
 7         xmlns:mvc="http://www.springframework.org/schema/mvc"
 8         xmlns:tx="http://www.springframework.org/schema/tx"
 9         xmlns:jpa="http://www.springframework.org/schema/data/jpa"
10         xmlns:jaxws="http://cxf.apache.org/jaxws"
11         xsi:schemaLocation="http://www.springframework.org/schema/beans
12                              http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
13                             http://www.springframework.org/schema/data/jpa 
14                             http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
15                             http://www.springframework.org/schema/tx 
16                             http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
17                             http://www.springframework.org/schema/context
18                             http://www.springframework.org/schema/context/spring-context-4.0.xsd
19                             http://www.springframework.org/schema/aop
20                             http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
21                             http://www.springframework.org/schema/mvc   
22                             http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
23                             http://cxf.apache.org/jaxws
24                             http://cxf.apache.org/schemas/jaxws.xsd ">
25     
26     <bean id="tc" class="org.springframework.context.support.ConversionServiceFactoryBean">
27         <property name="converters">
28             <set>
29                 <bean class="com.project.util.DataChange"></bean>
30             </set>
31         </property>
32     </bean>
33     
34     <mvc:annotation-driven conversion-service="tc"></mvc:annotation-driven>
35         
36     <context:component-scan base-package="com.project.action"></context:component-scan>
37     
38         <!-- 文件上傳解析器 -->  
39     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
40         <property name="defaultEncoding" value="utf-8"></property>  
41         <property name="maxUploadSize" value="10485760000"></property><!-- 最大上傳文件大小 -->  
42         <property name="maxInMemorySize" value="10960"></property>  
43     </bean>     
44 </beans>

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applicationContext.xml
該配置文件主要設置業務層的一些基本配置：
● 數據源
● session工廠
● 會話
● 事務管理器
● 註解事務支持java

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3         xmlns:p="http://www.springframework.org/schema/p"
 4         xmlns="http://www.springframework.org/schema/beans"
 5         xmlns:aop="http://www.springframework.org/schema/aop"
 6         xmlns:context="http://www.springframework.org/schema/context"
 7         xmlns:mvc="http://www.springframework.org/schema/mvc"
 8         xmlns:tx="http://www.springframework.org/schema/tx"
 9         xmlns:jpa="http://www.springframework.org/schema/data/jpa"
10         xmlns:jaxws="http://cxf.apache.org/jaxws"
11         xsi:schemaLocation="http://www.springframework.org/schema/beans
12                              http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
13                             http://www.springframework.org/schema/data/jpa 
14                             http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
15                             http://www.springframework.org/schema/tx 
16                             http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
17                             http://www.springframework.org/schema/context
18                             http://www.springframework.org/schema/context/spring-context-4.0.xsd
19                             http://www.springframework.org/schema/aop
20                             http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
21                             http://www.springframework.org/schema/mvc   
22                             http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
23                             http://cxf.apache.org/jaxws
24                             http://cxf.apache.org/schemas/jaxws.xsd ">
25                             
26         <bean id="data" class="org.apache.commons.dbcp2.BasicDataSource">
27             <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
28             <property name="url" value="jdbc:mysql://localhost:3306/test?characterEncoding=utf-8&amp;allowMultiQueries=true"></property>
29             <property name="username" value="root"></property>
30             <property name="password" value="123456"></property>
31             
32             <property name="maxTotal" value="100"></property>
33             <property name="maxIdle" value="20"></property>
34             <property name="maxWaitMillis" value="300"></property>
35         </bean>
36         
37         <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
38             <property name="dataSource" ref="data"></property>
39             <property name="typeAliasesPackage" value="com.project.bean"></property>
40             <property name="mapperLocations">
41                 <list>
42                     <value>classpath:com/project/mapper/*.xml</value>
43                 </list>
44             </property>
45         </bean>
46         
47     <bean id="session" class="org.mybatis.spring.SqlSessionTemplate" scope="prototype">
48         <constructor-arg ref="sqlSessionFactory"></constructor-arg>
49     </bean>
50     
51     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
52         <property name="dataSource" ref="data"></property>
53     </bean>
54     
55     <tx:annotation-driven transaction-manager="transactionManager"/>
56     
57     <context:component-scan base-package="com.project.service"></context:component-scan>
58     
59 </beans>

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3、配置好基本的配置文件

4、各個模塊代碼

1.工具類 util
時間類型裝換類：DateChange.javamysql

過濾器：web

文件上傳處理工具類：UploadUtil.javaspring

1.持久層sql

2. 業務層：
IUserServiceapache

BaseServicespring-mvc

UserServiceImplsession

3.表現層：
文件上傳頁面：

upload.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>

<script>  

function setImagePreview() {          

    var docObj=document.getElementById("doc");           

    var imgObjPreview=document.getElementById("preview");  

    if(docObj.files && docObj.files[0]){                          

        //火狐下，直接設img屬性                          

        imgObjPreview.style.display = 'block';                          

        imgObjPreview.style.width = '300px';                          

        imgObjPreview.style.height = '120px';                                              

        //imgObjPreview.src = docObj.files[0].getAsDataURL();  

        //火狐7以上版本不能用上面的getAsDataURL()方式獲取，須要一下方式          

        imgObjPreview.src = window.URL.createObjectURL(docObj.files[0]);  

     }else{                          

         //IE下，使用濾鏡                          

         docObj.select();                          

         var imgSrc = document.selection.createRange().text;                          

         var localImagId = document.getElementById("localImag");  

         //必須設置初始大小                          

         localImagId.style.width = "250px";                          

         localImagId.style.height = "200px";  

        //圖片異常的捕捉，防止用戶修改後綴來僞造圖片  

        try{                                  

            localImagId.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)";                                  

            localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc;                          

        }catch(e){                                  

            alert("您上傳的圖片格式不正確，請從新選擇!");                                  

            return false;                          

        }  

            imgObjPreview.style.display = 'none';                          

            document.selection.empty();                  

        }                  

            return true;          

        }  

</script> 

</head>
<body>

	<form action="/FileUpload/user/upload.do" method="post" enctype="multipart/form-data">
	姓名：<input type="text" name="userName"><br>
	生日：<input type="text" name="birthday"><br>
	<p><p id="localImag"><img id="preview" width=-1 height=-1 style="diplay:none" /></p></p> 
	圖片：<input type="file" name="img" id="doc" onchange="javascript:setImagePreview();"><br>
	<input type="submit" value="提交">
	</form>
</body>
</html>

jsp 頁面：表單屬性
表單中enctype="multipart/form-data"的意思，是設置表單的MIME編碼。
默認狀況，這個編碼格式是application/x-www-form-urlencoded，不能用於文件上傳；只有使用了multipart/form-data，才能完整的傳遞文件數據，進行下面的操做.