这似乎是一个非常常见的用例，应该有一个简单的解决方案，但我所看到的每个地方都充满了极其]肿的示例。
假设我的表单看起来像：
<form action="http://localhost/endpoint" method="POST" enctype="multipart/form-data">
<input type="text" name="value" />
<input type="submit" value="Submit"/>
</form>
我提交了它，并且在服务器上希望获得输入值：
在服务器上，我建立了一个具有单个端点的HttpServer，在这种情况下，它只是直接发送正文数据：
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
import java.io.*;
import java.net.InetSocketAddress;
import java.util.function.Consumer;
public class Main {
public static void main(String[] args) {
try {
HttpServer server = HttpServer.create(new InetSocketAddress(80), 10);
server.setExecutor(null);
server.createContext(
"/endpoint",
(HttpExchange httpExchange) -> {
InputStream input = httpExchange.getRequestBody();
StringBuilder stringBuilder = new StringBuilder();
new BufferedReader(new InputStreamReader(input))
.lines()
.forEach( (String s) -> stringBuilder.append(s + "\n") );
httpExchange.sendResponseHeaders(200, stringBuilder.length());
OutputStream output = httpExchange.getResponseBody();
output.write(stringBuilder.toString().getBytes());
httpExchange.close();
}
);
server.start();
} catch (Exception e) {
e.printStackTrace();
}
}
}
现在，如果使用输入"hi"提交表单，则返回
------WebKitFormBoundaryVs2BrJjCaLCWNF9o
Content-Disposition: form-data; name="value"
hi
------WebKitFormBoundaryVs2BrJjCaLCWNF9o--
这告诉我应该有一种获取字符串值的方法，但是我看到的唯一方法是手动解析它。
“在这里做。）public Server() throws IOException {
HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);
server.createContext("/", new HttpHandler() {
@Override
public void handle(HttpExchange t) throws IOException {
StringBuilder sb = new StringBuilder();
InputStream ios = t.getRequestBody();
int i;
while ((i = ios.read()) != -1) {
sb.append((char) i);
}
System.out.println("hm: " + sb.toString());
String response = " <html>\n"
+ "<body>\n"
+ "\n"
+ "<form action=\"http://localhost:8000\" method=\"post\">\n"
+ "input: <input type=\"text\" name=\"input\"><br>\n"
+ "input2: <input type=\"text\" name=\"input2\"><br>\n"
+ "<input type=\"submit\">\n"
+ "</form>\n"
+ "\n"
+ "</body>\n"
+ "</html> ";
t.sendResponseHeaders(200, response.length());
OutputStream os = t.getResponseBody();
os.write(response.getBytes());
os.close();
}
});
server.setExecutor(null);
server.start();
}