java 如何实现 http协议传输

Question

接收 手机http协议发送的数据（字节），接收原始的字节数据，并且返回字节数据（我接收的是证书文件，接收成字符串的话，证书就打不开了）

Answer 1

Java 6 提供了一个轻量级的纯 Java Http 服务器的实现。下面是一个简单的例子：

public static void main(String[] args) throws Exception{
　HttpServerProvider httpServerProvider = HttpServerProvider.provider();
　InetSocketAddress addr = new InetSocketAddress(7778);
　HttpServer httpServer = httpServerProvider.createHttpServer(addr, 1);
　httpServer.createContext("/myapp/", new MyHttpHandler());
　httpServer.setExecutor(null);
　httpServer.start();
　System.out.println("started");
}

static class MyHttpHandler implements HttpHandler{
　public void handle(HttpExchange httpExchange) throws IOException {
　　String response = "Hello world!";
　　httpExchange.sendResponseHeaders(200, response.length());
　　OutputStream out = httpExchange.getResponseBody();
　　out.write(response.getBytes());
　　out.close();
　}
}

　　然后，在浏览器中访问 http://localhost:7778/myapp/

Answer 2

public boolean upload(FormFile file, String filePath) {
boolean flag = false;
try {
InputStream stream = file.getInputStream(); // 把文件读入
ByteArrayOutputStream baos = new ByteArrayOutputStream();
OutputStream bos = new FileOutputStream(filePath + "/"
+ file.getFileName()); // 建立一个上传文件的输出流
// System.out.println(filePath+"/"+file.getFileName());
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {
baos.write(buffer, 0, bytesRead); // 将文件写入服务器
}
bos.close();
stream.close();
flag = true;
} catch (Exception e) {
System.err.print(e);
}
return flag;
}