我正在尝试向独立的 Neo4j 服务器(neo4j-community-1.9.M01)发送一个非常大的 http 发布请求。
Bellow 是我正在使用的示例代码。输入文件:ideas/src/test/test-rest.txt 包含一个非常大的 json 字符串(超过(250k)。
问题是我无法控制neo4j独立版本启动的Web服务器的很多设置。网络服务器上可能存在一些限制,阻止我发送大的帖子请求。有人可以帮我找出这个设置。替代方案:有人可以告诉我如何用 tomcat 替换 neo4j 使用的默认网络服务器。我在客户端收到的错误是:
Caused by: java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:105)
at java.io.FilterOutputStream.write(FilterOutputStream.java:80)
at org.apache.commons.httpclient.WireLogOutputStream.write(WireLogOutputStream.java:86)
at com.sun.jersey.client.apache.DefaultApacheHttpMethodExecutor$3.writeRequest(DefaultApacheHttpMethodExecutor.java:186)
at org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:499)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2114)
at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1096)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at com.sun.jersey.client.apache.DefaultApacheHttpMethodExecutor.executeMethod(DefaultApacheHttpMethodExecutor.java:210)
以下是来自 Web 客户端的一些日志:
11-11@08:28:01 INFO (HttpMethodDirector.java:445) - Retrying request
11-11@08:28:01 DEBUG (HttpConnection.java:692) - Open connection to localhost:7474
11-11@08:28:01 DEBUG ( Wire.java:70) - >> "POST /db/data/batch HTTP/1.1[\r][\n]"
11-11@08:28:01 DEBUG (HttpMethodBase.java:1352) - Adding Host request header
11-11@08:28:01 DEBUG ( Wire.java:70) - >> "Accept: application/json; stream=true[\r][\n]"
11-11@08:28:01 DEBUG ( Wire.java:70) - >> "X-Stream: true[\r][\n]"
11-11@08:28:01 DEBUG ( Wire.java:70) - >> "Content-Type: application/json[\r][\n]"
11-11@08:28:01 DEBUG ( Wire.java:70) - >> "User-Agent: Jakarta Commons-HttpClient/3.1[\r][\n]"
11-11@08:28:01 DEBUG ( Wire.java:70) - >> "Content-Length: 246292[\r][\n]"
11-11@08:28:01 DEBUG ( Wire.java:70) - >> "Host: localhost:7474[\r][\n]"
11-11@08:28:01 DEBUG ( Wire.java:70) - >> "[\r][\n]"
11-11@08:31:22 DEBUG (HttpMethodDirector.java:404) - Closing the connection.
11-11@08:31:22 DEBUG (HttpMethodDirector.java:434) - Method retry handler returned false. Automatic recovery will not be attempted
11-11@08:31:22 DEBUG (HttpConnection.java:1178) - Releasing connection back to connection manager.
这是客户端代码:
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.client.apache.ApacheHttpClient;
import org.apache.commons.io.FileUtils;
import org.neo4j.rest.graphdb.RequestResult;
import org.neo4j.rest.graphdb.UserAgent;
import javax.ws.rs.core.MediaType;
import java.io.*;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Map;
import static javax.ws.rs.core.MediaType.APPLICATION_JSON_TYPE;
public class Main {
private static final UserAgent userAgent = new UserAgent();
public static final MediaType STREAMING_JSON_TYPE = new MediaType(APPLICATION_JSON_TYPE.getType(),APPLICATION_JSON_TYPE.getSubtype(), stringMap("stream","true"));
public static void main(String[] args) throws URISyntaxException, IOException {
String data = FileUtils.readFileToString(new File("ideas/src/test/test-rest.txt"));
Client client = createClient();
WebResource resource = client.resource(new URI("http://localhost:7474/db/data/batch"));
WebResource.Builder builder = resource.accept(STREAMING_JSON_TYPE).header("X-Stream", "true");
builder.entity( toInputStream(data), APPLICATION_JSON_TYPE );
System.out.println(RequestResult.extractFrom(builder.post(ClientResponse.class)));
}
private static InputStream toInputStream(String data) throws IOException {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream(4024 * 1024);
outputStream.write(data.getBytes());
byte[] buf = outputStream.toByteArray();
ByteArrayInputStream inputStream = new ByteArrayInputStream(buf);
return inputStream;
}
protected static Client createClient1() {
Client client = Client.create();
client.setConnectTimeout(800);
client.setReadTimeout(800);
client.setChunkedEncodingSize(80 * 1024);
userAgent.install(client);
return client;
}
protected static Client createClient() {
Client client = ApacheHttpClient.create();
return client;
}
private static Map<String, String> stringMap(String stream, String aTrue) {
HashMap<String, String> result = new HashMap<String, String>();
result.put(stream, aTrue);
return result;
}
}
提前致谢。