Question

我正在使用RESTEasy开发休息服务，该服务的目的是从POST请求中获取文本文件并解析它。我有两种方式：

@Path("/HTTPRequestWay")
@POST
@Produces(MediaType.TEXT_PLAIN)
public String uploadFile2(
        @HeaderParam("sourceSystem")String sourceSystem,
        @HeaderParam("payloadType")String payloadType,
        @Context HttpServletRequest request){

    String payloadHTTP = "";
    try {
        payloadHTTP = getBody(request);
    }catch (IOException e){
        e.printStackTrace();
        payloadHTTP = "error";
    }

    return payloadHTTP;
}

@Path("/InputStreamWay")
@POST
@Produces(MediaType.TEXT_PLAIN)
public String uploadFile2(
        @HeaderParam("sourceSystem")String sourceSystem,
        @HeaderParam("payloadType")String payloadType,
        InputStream payload){

    String payloadInputStream = "none";
    try {
        payloadInputStream = IOUtils.toString(payload, "UTF-8");
    }catch (IOException e){
        e.printStackTrace();
        payloadInputStream = "error";
    }
    finally{
        IOUtils.closeQuietly(payload);
    }

    return payloadInputStream ;
}

public static String getBody(HttpServletRequest request) throws IOException {

    String body = null;
    StringBuilder stringBuilder = new StringBuilder();
    BufferedReader bufferedReader = null;

    try {
        InputStream inputStream = request.getInputStream();
        if (inputStream != null) {
            bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
            char[] charBuffer = new char[128];
            int bytesRead = -1;
            while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {
                stringBuilder.append(charBuffer, 0, bytesRead);
            }
        } else {
            stringBuilder.append("");
        }
    } catch (IOException ex) {
        throw ex;
    } finally {
        if (bufferedReader != null) {
            try {
                bufferedReader.close();
            } catch (IOException ex) {
                throw ex;
            }
        }
    }

    body = stringBuilder.toString();
    return body;
}

我试图用HttpServletRequest（获取正文）或在方法中放置一个参数（InputStream）来解析文件。我怀疑第二种情况为什么我的方法可以转换文件我发送在参数（InputStream有效载荷）？它对我来说看起来很神奇为什么它的第二种方式起作用哪种更好？谢谢

Answer 1

它不是魔术，它只是从InputStream注入HttpServletRequest。在docs获取战利品。

Resteasy可以自动编组和解组几个不同的邮件正文。

其中一个是java.io.InputStream。

使用POST请求将文件发送到REST服务

1 个答案: