在此之前如果你是一个Nginx新手可以先参阅:
本章知识点
效果图:
需求:实现图片的上传和批量上传
技术:Nginx,Vsftpd,Spring,SpringMVC,KindEditor,CentOS
说明:本章节内容主要是实现图片的上传功能。使用 KindEditer 是为了更好的演示图片的上传,回显,批量效果。后台代码与KindEditer没有直接关系,放心阅读。另外源码中有Mybatis的jar,不用理会,本章内容用不到,是为后续内容做准备!
源码:见文章底部
场景:用户将图片上传到 tomcat 服务器上,再由 tomcat 服务器通过FTP上传到 Nginx 服务器上。
项目结构:
单元测试
首先要攻破核心技术。通过单元测试实现图片上传的功能。
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package com.itdragon.test;
import java.io.File;
import java.io.FileInputStream;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.junit.Test;
public class PictureFTPTest {
// 测试 ftp 上传图片功能
@Test
public void testFtpClient() throws Exception {
// 1. 创建一个FtpClient对象
FTPClient ftpClient = new FTPClient();
// 2. 创建 ftp 连接
ftpClient.connect("192.168.0.11", 21);
// 3. 登录 ftp 服务器
ftpClient.login("ftpuser", "root");
// 4. 读取本地文件
FileInputStream inputStream = new FileInputStream(new File("F:\\hello.png"));
// 5. 设置上传的路径
ftpClient.changeWorkingDirectory("/usr/local/nginx/html/images");
// 6. 修改上传文件的格式为二进制
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
// 7. 服务器存储文件,第一个参数是存储在服务器的文件名,第二个参数是文件流
ftpClient.storeFile("hello.jpg", inputStream);
// 8. 关闭连接
ftpClient.logout();
}
}
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说明:这里的ip地址,端口,ftp用户名,密码,本地文件路径,以及Nginx服务器图片路径等,这些字符串参数都要根据自己实际设置的来填写的。如果你的Nginx和Vsftpd安装是按照我提供的链接来做的。那你只需要改ip地址即可。
Maven 的Web 项目
搭建Maven的Web 项目,之前有写过。这里就不过多描述。
项目核心配置文件
首先是 Maven 的核心文件 pom.xml
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< 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.itdragon.upload</ groupId >
< artifactId >pictrue-service</ artifactId >
< version >0.0.1-SNAPSHOT</ version >
< packaging >war</ packaging >
<!-- 集中定义依赖版本号 -->
< properties >
< junit.version >4.12</ junit.version >
< spring.version >4.1.3.RELEASE</ spring.version >
< mybatis.version >3.2.8</ mybatis.version >
< mybatis.spring.version >1.2.2</ mybatis.spring.version >
< mybatis.paginator.version >1.2.15</ mybatis.paginator.version >
< mysql.version >5.1.6</ mysql.version >
< slf4j.version >1.6.4</ slf4j.version >
< jackson.version >2.4.2</ jackson.version >
< druid.version >1.0.9</ druid.version >
< httpclient.version >4.3.5</ httpclient.version >
< jstl.version >1.2</ jstl.version >
< servlet-api.version >2.5</ servlet-api.version >
< jsp-api.version >2.0</ jsp-api.version >
< joda-time.version >2.5</ joda-time.version >
< commons-lang3.version >3.3.2</ commons-lang3.version >
< commons-io.version >1.3.2</ commons-io.version >
< commons-net.version >3.3</ commons-net.version >
< pagehelper.version >3.4.2</ pagehelper.version >
< jsqlparser.version >0.9.1</ jsqlparser.version >
< commons-fileupload.version >1.3.1</ commons-fileupload.version >
< jedis.version >2.7.2</ jedis.version >
< solrj.version >4.10.3</ solrj.version >
</ properties >
< dependencies >
<!-- 时间操作组件 -->
< dependency >
< groupId >joda-time</ groupId >
< artifactId >joda-time</ artifactId >
< version >${joda-time.version}</ version >
</ dependency >
<!-- Apache工具组件 -->
< dependency >
< groupId >org.apache.commons</ groupId >
< artifactId >commons-lang3</ artifactId >
< version >${commons-lang3.version}</ version >
</ dependency >
< dependency >
< groupId >org.apache.commons</ groupId >
< artifactId >commons-io</ artifactId >
< version >${commons-io.version}</ version >
</ dependency >
< dependency >
< groupId >commons-net</ groupId >
< artifactId >commons-net</ artifactId >
< version >${commons-net.version}</ version >
</ dependency >
<!-- Jackson Json处理工具包 -->
< dependency >
< groupId >com.fasterxml.jackson.core</ groupId >
< artifactId >jackson-databind</ artifactId >
< version >${jackson.version}</ version >
</ dependency >
<!-- httpclient -->
< dependency >
< groupId >org.apache.httpcomponents</ groupId >
< artifactId >httpclient</ artifactId >
< version >${httpclient.version}</ version >
</ dependency >
<!-- 单元测试 -->
< dependency >
< groupId >junit</ groupId >
< artifactId >junit</ artifactId >
< version >${junit.version}</ version >
< scope >test</ scope >
</ dependency >
<!-- 日志处理 -->
< dependency >
< groupId >org.slf4j</ groupId >
< artifactId >slf4j-log4j12</ artifactId >
< version >${slf4j.version}</ version >
</ dependency >
<!-- Mybatis -->
< dependency >
< groupId >org.mybatis</ groupId >
< artifactId >mybatis</ artifactId >
< version >${mybatis.version}</ version >
</ dependency >
< dependency >
< groupId >org.mybatis</ groupId >
< artifactId >mybatis-spring</ artifactId >
< version >${mybatis.spring.version}</ version >
</ dependency >
< dependency >
< groupId >com.github.miemiedev</ groupId >
< artifactId >mybatis-paginator</ artifactId >
< version >${mybatis.paginator.version}</ version >
</ dependency >
< dependency >
< groupId >com.github.pagehelper</ groupId >
< artifactId >pagehelper</ artifactId >
< version >${pagehelper.version}</ version >
</ dependency >
<!-- MySql -->
< dependency >
< groupId >mysql</ groupId >
< artifactId >mysql-connector-java</ artifactId >
< version >${mysql.version}</ version >
</ dependency >
<!-- 连接池 -->
< dependency >
< groupId >com.alibaba</ groupId >
< artifactId >druid</ artifactId >
< version >${druid.version}</ version >
</ dependency >
<!-- Spring -->
< dependency >
< groupId >org.springframework</ groupId >
< artifactId >spring-context</ artifactId >
< version >${spring.version}</ version >
</ dependency >
< dependency >
< groupId >org.springframework</ groupId >
< artifactId >spring-beans</ artifactId >
< version >${spring.version}</ version >
</ dependency >
< dependency >
< groupId >org.springframework</ groupId >
< artifactId >spring-webmvc</ artifactId >
< version >${spring.version}</ version >
</ dependency >
< dependency >
< groupId >org.springframework</ groupId >
< artifactId >spring-jdbc</ artifactId >
< version >${spring.version}</ version >
</ dependency >
< dependency >
< groupId >org.springframework</ groupId >
< artifactId >spring-aspects</ artifactId >
< version >${spring.version}</ version >
</ dependency >
<!-- JSP相关 -->
< dependency >
< groupId >jstl</ groupId >
< artifactId >jstl</ artifactId >
< version >${jstl.version}</ version >
</ dependency >
< dependency >
< groupId >javax.servlet</ groupId >
< artifactId >servlet-api</ artifactId >
< version >${servlet-api.version}</ version >
< scope >provided</ scope >
</ dependency >
< dependency >
< groupId >javax.servlet</ groupId >
< artifactId >jsp-api</ artifactId >
< version >${jsp-api.version}</ version >
< scope >provided</ scope >
</ dependency >
<!-- 文件上传组件 -->
< dependency >
< groupId >commons-fileupload</ groupId >
< artifactId >commons-fileupload</ artifactId >
< version >${commons-fileupload.version}</ version >
</ dependency >
<!-- Redis客户端 -->
< dependency >
< groupId >redis.clients</ groupId >
< artifactId >jedis</ artifactId >
< version >${jedis.version}</ version >
</ dependency >
<!-- solr客户端 -->
< dependency >
< groupId >org.apache.solr</ groupId >
< artifactId >solr-solrj</ artifactId >
< version >${solrj.version}</ version >
</ dependency >
</ dependencies >
< build >
< finalName >${project.artifactId}</ finalName >
< plugins >
<!-- 资源文件拷贝插件 -->
< plugin >
< groupId >org.apache.maven.plugins</ groupId >
< artifactId >maven-resources-plugin</ artifactId >
< version >2.7</ version >
< configuration >
< encoding >UTF-8</ encoding >
</ configuration >
</ plugin >
<!-- java编译插件 -->
< plugin >
< groupId >org.apache.maven.plugins</ groupId >
< artifactId >maven-compiler-plugin</ artifactId >
< version >3.2</ version >
< configuration >
< source >1.7</ source >
< target >1.7</ target >
< encoding >UTF-8</ encoding >
</ configuration >
</ plugin >
</ plugins >
< pluginManagement >
< plugins >
<!-- 配置Tomcat插件 -->
< plugin >
< groupId >org.apache.tomcat.maven</ groupId >
< artifactId >tomcat7-maven-plugin</ artifactId >
< version >2.2</ version >
</ plugin >
</ plugins >
</ pluginManagement >
</ build >
</ project >
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说明:和文件上传有直接关系的是:
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< dependency >
< groupId >commons-fileupload</ groupId >
< artifactId >commons-fileupload</ artifactId >
</ dependency >
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然后是 Web 项目的核心文件 web.xml
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<? 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" xmlns:web = "http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation = "http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id = "taotao" version = "2.5" >
< display-name >pictrue-service</ display-name >
<!-- 加载spring容器 -->
< context-param >
< param-name >contextConfigLocation</ param-name >
< param-value >classpath:spring/applicationContext-*.xml</ param-value >
</ context-param >
< listener >
< listener-class >org.springframework.web.context.ContextLoaderListener</ listener-class >
</ listener >
<!-- 解决post乱码 -->
< filter >
< filter-name >CharacterEncodingFilter</ 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 >CharacterEncodingFilter</ filter-name >
< url-pattern >/*</ url-pattern >
</ filter-mapping >
<!-- springmvc的前端控制器 -->
< servlet >
< servlet-name >pictrue-service</ servlet-name >
< servlet-class >org.springframework.web.servlet.DispatcherServlet</ servlet-class >
< init-param >
< param-name >contextConfigLocation</ param-name >
< param-value >classpath:spring/springmvc.xml</ param-value >
</ init-param >
< load-on-startup >1</ load-on-startup >
</ servlet >
< servlet-mapping >
< servlet-name >pictrue-service</ servlet-name >
< url-pattern >/</ url-pattern >
</ servlet-mapping >
</ web-app >
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再是 SpringMVC 配置文件 springmvc.xml,需要添加文件上传解析器
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<!-- 定义文件上传解析器 -->
< bean id = "multipartResolver"
class = "org.springframework.web.multipart.commons.CommonsMultipartResolver" >
<!-- 设定默认编码 -->
< property name = "defaultEncoding" value = "UTF-8" ></ property >
<!-- 设定文件上传的最大值5MB,5*1024*1024 -->
< property name = "maxUploadSize" value = "5242880" ></ property >
</ bean >
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最后是 Ftp 配置文件 resource.properties
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FTP_ADDRESS=192.168.0.11
FTP_PORT=21
FTP_USERNAME=ftpuser
FTP_PASSWORD=root
FTP_BASE_PATH=/usr/local/nginx/html/images
IMAGE_BASE_URL=http://192.168.0.11/images
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Service 层
上传图片的接口 PictureService.java
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package com.itdragon.service;
import java.util.Map;
import org.springframework.web.multipart.MultipartFile;
public interface PictureService {
/**
* 上传,批量上传接口
* @param uploadFile
* @return
*/
Map uploadPicture(MultipartFile uploadFile);
}
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上传图片接口实现类 PictureServiceImpl.java
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package com.itdragon.service.impl;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import com.itdragon.service.PictureService;
@Service
@SuppressWarnings({"rawtypes", "unchecked"})
public class PictureServiceImpl implements PictureService {
// 通过 Spring4 的 Value注解,获取配置文件中的属性值
@Value("${FTP_ADDRESS}")
private String FTP_ADDRESS; // ftp 服务器ip地址
@Value("${FTP_PORT}")
private Integer FTP_PORT; // ftp 服务器port,默认是21
@Value("${FTP_USERNAME}")
private String FTP_USERNAME; // ftp 服务器用户名
@Value("${FTP_PASSWORD}")
private String FTP_PASSWORD; // ftp 服务器密码
@Value("${FTP_BASE_PATH}")
private String FTP_BASE_PATH; // ftp 服务器存储图片的绝对路径
@Value("${IMAGE_BASE_URL}")
private String IMAGE_BASE_URL; // ftp 服务器外网访问图片路径
@Override
public Map uploadPicture(MultipartFile uploadFile) {
Map resultMap = new HashMap<>();
try {
// 1. 取原始文件名
String oldName = uploadFile.getOriginalFilename();
// 2. ftp 服务器的文件名
String newName = oldName;
//图片上传
boolean result = uploadFile(FTP_ADDRESS, FTP_PORT, FTP_USERNAME, FTP_PASSWORD,
uploadFile.getInputStream(), FTP_BASE_PATH, newName);
//返回结果
if(!result) {
resultMap.put("error", 1);
resultMap.put("message", "upload Fail");
return resultMap;
}
resultMap.put("error", 0);
resultMap.put("url", IMAGE_BASE_URL + "/" + newName);
return resultMap;
} catch (Exception e) {
e.printStackTrace();
resultMap.put("error", 1);
resultMap.put("message", "upload Fail");
return resultMap;
}
}
/**
* ftp 上传图片方法
* @param ip ftp 服务器ip地址
* @param port ftp 服务器port,默认是21
* @param account ftp 服务器用户名
* @param passwd ftp 服务器密码
* @param inputStream 文件流
* @param workingDir ftp 服务器存储图片的绝对路径
* @param fileName 上传到ftp 服务器文件名
* @throws Exception
*
*/
public boolean uploadFile(String ip, Integer port, String account, String passwd,
InputStream inputStream, String workingDir, String fileName) throws Exception{
boolean result = false;
// 1. 创建一个FtpClient对象
FTPClient ftpClient = new FTPClient();
try {
// 2. 创建 ftp 连接
ftpClient.connect(ip, port);
// 3. 登录 ftp 服务器
ftpClient.login(account, passwd);
int reply = ftpClient.getReplyCode(); // 获取连接ftp 状态返回值
System.out.println("code : " + reply);
if (!FTPReply.isPositiveCompletion(reply)) {
ftpClient.disconnect(); // 如果返回状态不再 200 ~ 300 则认为连接失败
return result;
}
// 4. 读取本地文件
// FileInputStream inputStream = new FileInputStream(new File("F:\\hello.png"));
// 5. 设置上传的路径
ftpClient.changeWorkingDirectory(workingDir);
// 6. 修改上传文件的格式为二进制
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
// 7. 服务器存储文件,第一个参数是存储在服务器的文件名,第二个参数是文件流
if (!ftpClient.storeFile(fileName, inputStream)) {
return result;
}
// 8. 关闭连接
inputStream.close();
ftpClient.logout();
result = true;
} catch (Exception e) {
e.printStackTrace();
}finally {
// FIXME 听说,项目里面最好少用try catch 捕获异常,这样会导致Spring的事务回滚出问题???难道之前写的代码都是假代码!!!
if (ftpClient.isConnected()) {
try {
ftpClient.disconnect();
} catch (IOException ioe) {
}
}
}
return result;
}
}
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说明:
① @Value 注解是Spring4 中提供的,@Value("${XXX}")
② 返回值是一个Map,并且key有error,url,message。这是根据KindEditer的语法要求来的。
Controller 层
负责页面跳转的 PageController.java
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package com.itdragon.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class PageController {
/**
* 打开首页
*/
@RequestMapping("/")
public String showIndex() {
return "index";
}
@RequestMapping("/{page}")
public String showpage(@PathVariable String page) {
System.out.println("page : " + page);
return page;
}
}
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负责图片上传的 PictureController.java
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package com.itdragon.controller;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.itdragon.service.PictureService;
@RestController
public class PictureController {
@Autowired
private PictureService pictureService;
@RequestMapping("pic/upload")
public String pictureUpload(@RequestParam(value = "fileUpload") MultipartFile uploadFile) {
String json = "";
try {
Map result = pictureService.uploadPicture(uploadFile);
// 浏览器擅长处理json格式的字符串,为了减少因为浏览器内核不同导致的bug,建议用json
json = new ObjectMapper().writeValueAsString(result);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
return json;
}
}
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说明:
① @RestController 也是Spring4 提供的,是 @Controller + @ResponseBody 的组合注解。
② Controller层的返回值是一个json格式的字符串。是考虑到浏览器对json解析兼容性比较好。
Views视图层
负责上传图片的jsp页面 pic-upload.jsp
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<%@ page language="java" contentType="text/html; UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
< html >
< head >
< meta http-equiv = "Content-Type" content = "text/html; charset=UTF-8" >
< title >ITDragon 图片上传</ title >
</ head >
< link href = "/js/kindeditor-4.1.10/themes/default/default.css" rel = "external nofollow" type = "text/css" rel = "stylesheet" >
< script type = "text/javascript" src = "js/jquery.min.js" ></ script >
< script type = "text/javascript" charset = "utf-8" src = "/js/kindeditor-4.1.10/kindeditor-all-min.js" ></ script >
< script type = "text/javascript" charset = "utf-8" src = "/js/kindeditor-4.1.10/lang/zh_CN.js" ></ script >
</ head >
< body >
< h3 >测试上传图片功能接口的form表单</ h3 >
< form action = "pic/upload" method = "post" enctype = "multipart/form-data" >
< input type = "file" name = "fileUpload" />
< input type = "submit" value = "上传文件" />
</ form >
< hr />
< h3 >借用KindEditor富文本编辑器实现批量上传图片</ h3 >
< textarea id = "kindEditorDesc" style = "width:800px;height:300px;visibility:hidden;" ></ textarea >
< script type = "text/javascript" >
$(function(){
//初始化富文本编辑器
KindEditor.create("#kindEditorDesc", {
// name值,必须和Controller 的参数对应,不然会提示 400 的错误
filePostName : "fileUpload",
// action值,
uploadJson : '/pic/upload',
// 设置上传类型,分别为image、flash、media、file
dir : "image"
});
});
</ script >
</ body >
</ html >
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说明:pic-upload.jsp 分为两个部分,第一个部分是为了测试上传图片功能的form表单。第二个部分是为了更好的体验上传,批量上传,回显功能的KindEditer 富文本编辑器。
总结 Nginx 搭建服务器的思维 Java实现 Ftp上传图片的功能 KindEditer 上传图片的功能
原文链接:http://www.cnblogs.com/itdragon/p/7864916.html