我确信如果您使用过jsonrpc4j(弹簧容器外的 ),您将会识别以下标准模式。
public class MyServletJsonRpc extends HttpServlet {
private MyService myService;
private JsonRpcServer jsonRpcServer;
@Override
protected void doPost(HttpServletRequest request
, HttpServletResponse response) throws IOException {
jsonRpcServer.handle(request, response);
}
@Override
public void init(ServletConfig config) {
myService = new MyServiceImpl();
jsonRpcServer = new JsonRpcServer(myService, MyService.class);
jsonRpcServer.set...
}
我正在尝试创建一个包含所有JSON请求和JSON响应的日志文件。即,我想在反序列化之前记录传入的JSON RPC请求,并在序列化后立即记录该请求。
我一直在阅读代码,似乎没有一个简单的方法来做到这一点。有人可以帮忙吗?
我提出的解决方案(有效)使用了各种装饰,但我对此并不满意:
public class MyServletJsonRpc extends HttpServlet {
private MyService myService;
private JsonRpcServer jsonRpcServer;
@Override
protected void doPost(HttpServletRequest request
, HttpServletResponse response) throws IOException {
jsonRpcServer.handle(request, response);
}
@Override
public void init(ServletConfig config) {
myService = new MyServiceImpl();
ObjectMapper mapper = new MyObjectMapper(null, null, null);
jsonRpcServer = new MyJsonRpcServer(mapper, myService, null);
jsonRpcServer.set...
}
}
使用以下2个重载类:
class MyObjectMapper extends ObjectMapper {
private static final Logger L = LoggerFactory.getLogger(MyObjectMapper.class);
public MyObjectMapper(JsonFactory jf, DefaultSerializerProvider sp, DefaultDeserializationContext dc) {
super(jf, sp, dc);
}
@Override
public void writeValue(OutputStream out, Object value) throws IOException, JsonGenerationException,
JsonMappingException {
super.writeValue(out, value);
L.info("Out: " + writeValueAsString(value));
}
}
和
class MyJsonRpcServer extends JsonRpcServer {
private static final Logger L = LoggerFactory.getLogger(MyJsonRpcServer.class);
public MyJsonRpcServer(ObjectMapper mapper, Object handler, Class<?> remoteInterface) {
super(mapper, handler, remoteInterface);
}
@Override
public void handleNode(JsonNode node, OutputStream ops) throws IOException {
L.info("In: " + (node == null ? "(null)" : node.toString()));
super.handleNode(node, ops);
}
}
我认为这看起来像是一个讨厌的黑客。有没有更好的方法呢?
答案 0 :(得分:1)
图书馆支持使用InvocationListener
:https://github.com/briandilley/jsonrpc4j/blob/master/src/main/java/com/googlecode/jsonrpc4j/InvocationListener.java
您可以在servlet init()
方法中将其添加到服务器,所有调用都将通过它。
所以只需致电server.setInvocationListener
,您就可以了。