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服务器之家 - 服务器技术 - Nginx - 详解Nginx搭建图片服务器过程

详解Nginx搭建图片服务器过程

2019-12-11 15:26 Nginx

本篇文章给大家图文详细讲解了Nginx搭建图片服务器的过程以及中间遇到的问题处理方法,一起跟着小编学习下吧。

在此之前如果你是一个Nginx新手可以先参阅:

Windows nginx安装教程及简单实践

本章知识点

效果图:

详解Nginx搭建图片服务器过程

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。

详解Nginx搭建图片服务器过程

项目结构:

详解Nginx搭建图片服务器过程

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();
    
  }
  
}

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>

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>

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>

 

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>

 

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

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);
}

 

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;
  }
 
}

 

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;
  }
}

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;
  }
}

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>

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

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