Question

我正在尝试将org.apache.http.HttpResponse写入档案。

System.out.println("length");
System.out.println(EntityUtils.toByteArray(response.getEntity()).length);

给出这个：长度 48905367

OutputStream outputStream = new FileOutputStream(new File("C:/response.json"));
org.apache.commons.io.IOUtils.copy(response.getEntity().getContent(), outputStream);
outputStream.close();

给出了这个

Exception in thread "main" java.io.IOException: Attempted read from closed stream.
    at org.apache.http.impl.io.ChunkedInputStream.read(ChunkedInputStream.java:179)
    at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:137)
    at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:150)
    at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1025)
    at org.apache.commons.io.IOUtils.copy(IOUtils.java:999)

Answer 1

我不确定这是否是答案，但您需要先将响应信息设置为新类。我使用Gson库：

    Gson gson = new Gson();
    HttpResponse response = httpGetRequest("URL_ENDPOINT");
    ResponseDTO responseDTO = gson.fromJson(prettyJsonResponse(response), 
    ResponseDTO.class);

这是http get请求方法：

    private HttpResponse httpGetRequest(String url) throws Exception {
    HttpClient client = new DefaultHttpClient();
    HttpGet request = new HttpGet(url);
    return client.execute(request);
}

这是maven的依赖：

    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.2</version>
    </dependency>

prettyJsonResponse方法：

    private String prettyJsonResponse(HttpResponse response) throws IOException{
    StringBuffer result = new StringBuffer();
    String line = "";
    BufferedReader rd = new BufferedReader(
            new InputStreamReader(response.getEntity().getContent()));
    while ((line = rd.readLine()) != null) {
        result.append(line);
    }   
    return result.toString();
}

Answer 2

其他人在另一个论坛上回答了您的问题： java.io.IOException: Attempted read from closed stream

我有同样的问题;我在同一内容中两次致电response.getEntity()。一旦我评论了第二个电话，一切都开始运作良好。

以下是文档的链接： http://hc.apache.org/httpcomponents-core-4.2.x/httpcore/apidocs/org/apache/http/HttpEntity.html#getContent%28%29

Apache http写入文件响应

2 个答案: