# LeastJavaServer
**Repository Path**: leastedu/LeastJavaServer
## Basic Information
- **Project Name**: LeastJavaServer
- **Description**: 相比写过java的伙伴都知道，现有的java框架几乎都是重量级的，封装得严严实实的， Spring、Struts、Hibernate等几乎都是重量级的框架，殊不知java只需要不到40行代码就可以实现一个微型服务器的搭建！
- **Primary Language**: Java
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: https://gitee.com/leastedu/LeastJavaServer
- **GVP Project**: No
## Statistics
- **Stars**: 2
- **Forks**: 0
- **Created**: 2019-11-20
- **Last Updated**: 2020-12-19
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# LeastJavaServer
#### 介绍
相比写过java的伙伴都知道，现有的java框架几乎都是重量级的，封装得严严实实的， Spring、Struts、Hibernate等几乎都是重量级的框架，殊不知java只需要不到40行代码就可以实现一个微型服务器的搭建！话不多说，直接上代码：
```
import java.io.*;
import java.net.*;
import java.util.*;
public class LeastServer {
public static void main(String[] args)throws Exception {
String requestMessageLine;
String fileName;
ServerSocket listensocket = new ServerSocket(6789);
Socket connectionSocket = listensocket.accept();
BufferedReader inFormClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
DataOutputStream outToClient = new DataOutputStream(connectionSocket.getOutputStream());
requestMessageLine =inFormClient.readLine();
StringTokenizer tokenizerdLine=new StringTokenizer(requestMessageLine);
if(tokenizerdLine.nextToken().equals("GET")){
fileName=tokenizerdLine.nextToken();
if (fileName.startsWith("/")){
fileName=fileName.substring(1);
}
File file=new File(fileName);
int numbOfBytes=(int)file.length();
FileInputStream inFile=new FileInputStream(fileName);
byte[] fileInBytes=new byte[numbOfBytes];
inFile.read(fileInBytes);
outToClient.writeBytes("HTTP/1.0 200 Document Folllows\r\n");
if (fileName.endsWith(".jpg")){
outToClient.writeBytes("Content-Type:image/jpeg\r\n");
}
if(fileName.endsWith(".gif")){
outToClient.writeBytes("Content-Type:image/gif\r\n");
}
outToClient.writeBytes("Content-Length:"+numbOfBytes+"\r\n");
outToClient.writeBytes("\r\n");
outToClient.write(fileInBytes,0,numbOfBytes);
connectionSocket.close();
}
else System.out.println("Bad Request Message");
}
}
```
只需要运行如下命令：
javac LeastServer.java
java LeastServer
服务器已经启动了，只需要新建一个test.html:
```
hello,leastedu最简单服务器！
hello,leastedu最简单服务器！
```
在浏览器里面输入http://127.0.0.1:6789/test.html
效果如下：
看吧，全网最简单的java服务器诞生了！