java框架--springmvc --ajax-json-upload+maven

时间：2018-01-08 11:40:15 阅读：232 评论：0 收藏：0 [点我收藏+]

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package com.zhouwuji.controller;

import java.io.File;
import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import org.apache.commons.io.FileUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;

@Controller
public class FileController {
    @RequestMapping("/upload.do")
    public String queryFileData(@RequestParam("uploadfile") CommonsMultipartFile file,HttpServletRequest request){
        
        /*MultipartFile是对当前上传的文件的封装，
         * 当同时上传多个文件时，可以给定多个MultipartFile参数（数组）
         */
        if(file!=null){
            System.out.println("文件对象接到了！");
            
            //获取文件名
            String filename=file.getOriginalFilename();
            System.out.println("filename："+filename);
            
            //获取上传路径
            String path=request.getSession().getServletContext().getRealPath("/upload/"+filename);
            System.out.println("path:"+path);
            
            //创建文件流并指定写入路径
            File destFile=new File(path);
            
                //springmvc的方式
                //该方法自动操作，不需要额外的去关闭IO流
                //复制临时文件到指定文件夹下
                try {
                    FileUtils.copyInputStreamToFile(file.getInputStream(), destFile);
                    System.out.println("上传成功");
                    return "/success.jsp";
                } catch (IOException e) {
                    e.printStackTrace();
                    System.out.println("上传失败");
                    return "/error.jsp";
                }
        }else{
            System.out.println("文件没有对象接到了！");
            return "/error.jsp";
            
        }
    }
/*文件对象接到了！
filename：中软笔记.txt
path:D:/apache-tomcat-7.0.82-windows-x64/apache-tomcat-7.0.82/webapps/project-ajaxjson/upload/中软笔记.txt
上传成功*/

}

FileController

package com.zhouwuji.controller;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class LoginController {
      
    @RequestMapping("/json.do")
    @ResponseBody
    public  List<User> login(){
        List<User> users=new ArrayList<User>();
        users.add(new User(1, "张三", "男"));
        users.add(new User(2, "李四", "男"));
        users.add(new User(3, "西施", "女"));
        return users;
    }
}

LoginController

package com.zhouwuji.controller;

public class User {
    private int id;
    private String name;
    private String sex;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public User(int id, String name, String sex) {
        super();
        this.id = id;
        this.name = name;
        this.sex = sex;
    }
    public User() {
        super();
    }
    
}

User

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@  taglib  uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!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>
</head>
<body>
       值：${ad}  
</body>
</html>

index.jsp

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">


    <bean id="stringConverter"
        class="org.springframework.http.converter.StringHttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/plain;charset=UTF-8</value>
            </list>
        </property>
    </bean>
    <bean id="jsonConverter"
        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"></bean>

    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="stringConverter" />
                <ref bean="jsonConverter" />
            </list>
        </property>
    </bean>


    <!-- 1.springMVC上传文件时，需要配置CommonsMultipartResolver处理器 -->
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 设置默认的编码格式 -->
        <property name="defaultEncoding" value="UTF-8" />
        <property name="maxInMemorySize" value="10240" /> <!-- 最大内存大小 (10240) -->
        <property name="uploadTempDir" value="/upload/" /> <!-- 上传后的目录名 (WebUtils#TEMP_DIR_CONTEXT_ATTRIBUTE) -->
        <!-- 指定所上传文件的总的大小不能超过200kb， 注意maxUploadSize属性点 限制 不是针对单个文件， 而是所有文件的容量总和 -->
        <property name="maxUploadSize" value="-1" /><!-- 最大文件大小，-1为无限止(-1) -->
    </bean>
    <!-- 2.springMVC在超出上传文件限制时，会抛出 org.springframework.web.multipart.MaxUploadSizeExceededException 
        该异常时SpringMVC在检查上传文件信息时抛出来的，而且此时还没有进入到Controller方法中 -->
    <bean id="exceptionResolver"
        class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="exceptionMappings">
            <props>
                <!-- 在遇到MaxUploadSizeExceededException异常时，自动跳到xxx面 -->
                <prop
                    key="org.springframework.web.multipart.MaxUploadSizeExceededException">error.jsp</prop>
            </props>
        </property>
    </bean>



    <context:component-scan base-package="com.zhouwuji.controller"></context:component-scan>
</beans>

springmvc-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<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">
   <filter>
      <filter-name>encoding</filter-name>
      <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>    
      <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
      </init-param>
    </filter>
    <filter-mapping>
      <filter-name>encoding</filter-name>
      <url-pattern>/*</url-pattern>
    </filter-mapping>
   
   <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
   
   <welcome-file-list>
           <welcome-file>index.jsp</welcome-file>
   </welcome-file-list>
</web-app>

web.xml

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP ‘index.jsp‘ starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
  
  <body>
   文件上传异常
  </body>
</html>

error.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP ‘index.jsp‘ starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
  
  <body>
   文件上传失败
  </body>
</html>

fail.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@  taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!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>
</head>
<body>
    <center>
        <form action="<%=basePath%>upload.do" method="post"
            enctype="multipart/form-data">
            <input type="hidden" name="holly" value="holly" /> 上传文件:<input
                type="file" name="uploadfile"> <input type="submit"
                value="上传">
        </form>
        <button id="btn" type="button">Click Me!</button>
        <table width="80%" align="center">
            <tr>
                <td>编号</td>
                <td>姓名</td>
                <td>性别</td>
            </tr>
            <tbody id="content">
            </tbody>
        </table>
    </center>
</body>
<script src="js/jquery-1.8.3.js" type="text/javascript"></script>
<script type="text/javascript">
    $(function() {
        $("#btn").click(
                function() {
                    $.post("json.do", function(data) {
                        var html = "";
                        for (var i = 0; i < data.length; i++) {
                            html += "<tr><td>" + data[i].id + "</td><td>"
                                    + data[i].name + "</td><td>" + data[i].sex
                                    + "</td></tr>";
                        }
                        ;
                        $("#content").html(html);
                    });
                });
    });
</script>
</html>

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP ‘index.jsp‘ starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>
  
  <body>
   文件上传成功
  </body>
</html>

success.jsp

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.zhouwuji.wuji</groupId>
    <artifactId>project</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/commons-logging/commons-logging -->
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.1.6.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context-support -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>4.1.6.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/jstl/jstl -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.5.4</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.5.4</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.5.4</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.2.2</version>
        </dependency>

    </dependencies>


</project>

pom.xml

java框架--springmvc --ajax-json-upload+maven

原文：https://www.cnblogs.com/ou-pc/p/8241771.html

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