Java JAX-RS 2打印JSON请求
我希望能够从请求中打印JAX-RS2JSON负载,而不考虑在我的应用服务器上的实际实现 我已经在SO上尝试过建议的解决方案,但都包括来自实际实现的二进制文件(如Jersey和类似的),并且我只允许在我的应用程序中使用JavaEEAPIV7.0 我尝试在我的客户端上实现ClientRequestFilter和ClientResponseFilter,但它们不包含序列化实体 以下是一个客户端示例:Java JAX-RS 2打印JSON请求,java,json,jakarta-ee,logging,jax-rs,Java,Json,Jakarta Ee,Logging,Jax Rs,我希望能够从请求中打印JAX-RS2JSON负载,而不考虑在我的应用服务器上的实际实现 我已经在SO上尝试过建议的解决方案,但都包括来自实际实现的二进制文件(如Jersey和类似的),并且我只允许在我的应用程序中使用JavaEEAPIV7.0 我尝试在我的客户端上实现ClientRequestFilter和ClientResponseFilter,但它们不包含序列化实体 以下是一个客户端示例: WebTarget target = ClientBuilder.newClient().regist
WebTarget target = ClientBuilder.newClient().register(MyLoggingFilter.class).target("http://localhost:8080/loggingtest/resources/accounts");
Account acc = target.request().accept(MediaType.APPLICATION_JSON).get(account.Account.class);
下面是MyLoggingFilter的实现:
@Provider
public class MyLoggingFilter implements ClientRequestFilter, ClientResponseFilter {
private static final Logger LOGGER = Logger.getLogger(MyLoggingFilter.class.getName());
@Override
public void filter(ClientRequestContext requestContext) throws IOException {
LOGGER.log(Level.SEVERE, "Request method: {0}", requestContext.getMethod());
}
@Override
public void filter(ClientRequestContext requestContext, ClientResponseContext responseContext) throws IOException {
LOGGER.log(Level.SEVERE, "Response status: {0}", responseContext.getStatus());
}
}
因此,当试图实现这个时,有两件事需要考虑。
@Override
public void filter(ClientRequestContext requestContext) {
Object entity = requestContext.getEntity();
String serialized = serializeEntity(entity);
log(serialized);
在这里,您可以使用JacksonObjectMapper
或其他方法对其进行序列化。你可以这样做,但它能处理的类型有限。如果让对象按照框架已经处理过的方式进行序列化,那么框架将能够支持比JSON更多的类型
为了让框架处理序列化,并且仍然能够获得序列化数据,我们需要使用。我们可以做的是将实体输出流设置为ByteArrayOutputStream
,然后让框架将请求对象序列化为我们的ByteArrayOutputStream
,然后在事后记录这些字节。这就是JerseyLoggingFilter
处理此问题的方式mark()
和reset()
标记,前提是支持标记。如果不是,则将其包装在缓冲输出流中
。同样,这也是JerseyLoggingFilter
处理此问题的方式LoggingFilter
,尽管它只是为了您的用例而精简的。JerseyLoggingFilter
记录了很多其他信息,除了实体之外。我遗漏的一件事是检查字符集。我刚刚使用了一个硬编码的UTF-8,因为Jersey使用的MessageUtil
类是Jersey特有的。如果您想使过滤器对其他字符集更通用,您可能需要考虑修复它
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.logging.Logger;
import javax.annotation.Priority;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientRequestFilter;
import javax.ws.rs.client.ClientResponseContext;
import javax.ws.rs.client.ClientResponseFilter;
import javax.ws.rs.ext.WriterInterceptor;
import javax.ws.rs.ext.WriterInterceptorContext;
@Priority(Integer.MIN_VALUE)
public class EntityLoggingFilter implements ClientRequestFilter, ClientResponseFilter, WriterInterceptor {
private static final Logger logger = Logger.getLogger(EntityLoggingFilter.class.getName());
private static final String ENTITY_STREAM_PROPERTY = "EntityLoggingFilter.entityStream";
private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
private final int maxEntitySize = 1024 * 8;
private void log(StringBuilder sb) {
logger.info(sb.toString());
}
private InputStream logInboundEntity(final StringBuilder b, InputStream stream, final Charset charset) throws IOException {
if (!stream.markSupported()) {
stream = new BufferedInputStream(stream);
}
stream.mark(maxEntitySize + 1);
final byte[] entity = new byte[maxEntitySize + 1];
final int entitySize = stream.read(entity);
b.append(new String(entity, 0, Math.min(entitySize, maxEntitySize), charset));
if (entitySize > maxEntitySize) {
b.append("...more...");
}
b.append('\n');
stream.reset();
return stream;
}
@Override
public void filter(ClientRequestContext requestContext) throws IOException {
if (requestContext.hasEntity()) {
final OutputStream stream = new LoggingStream(requestContext.getEntityStream());
requestContext.setEntityStream(stream);
requestContext.setProperty(ENTITY_STREAM_PROPERTY, stream);
}
}
@Override
public void filter(ClientRequestContext requestContext,
ClientResponseContext responseContext) throws IOException {
final StringBuilder sb = new StringBuilder();
if (responseContext.hasEntity()) {
responseContext.setEntityStream(logInboundEntity(sb, responseContext.getEntityStream(),
DEFAULT_CHARSET));
log(sb);
}
}
@Override
public void aroundWriteTo(WriterInterceptorContext context)
throws IOException, WebApplicationException {
final LoggingStream stream = (LoggingStream) context.getProperty(ENTITY_STREAM_PROPERTY);
context.proceed();
if (stream != null) {
log(stream.getStringBuilder(DEFAULT_CHARSET));
}
}
private class LoggingStream extends FilterOutputStream {
private final StringBuilder sb = new StringBuilder();
private final ByteArrayOutputStream baos = new ByteArrayOutputStream();
LoggingStream(OutputStream out) {
super(out);
}
StringBuilder getStringBuilder(Charset charset) {
// write entity to the builder
final byte[] entity = baos.toByteArray();
sb.append(new String(entity, 0, entity.length, charset));
if (entity.length > maxEntitySize) {
sb.append("...more...");
}
sb.append('\n');
return sb;
}
@Override
public void write(final int i) throws IOException {
if (baos.size() <= maxEntitySize) {
baos.write(i);
}
out.write(i);
}
}
}
import java.io.BufferedInputStream;
导入java.io.ByteArrayOutputStream;
导入java.io.FilterOutputStream;
导入java.io.IOException;
导入java.io.InputStream;
导入java.io.OutputStream;
导入java.nio.charset.charset;
导入java.nio.charset.StandardCharset;
导入java.util.logging.Logger;
导入javax.annotation.Priority;
导入javax.ws.rs.WebApplicationException;
导入javax.ws.rs.client.ClientRequestContext;
导入javax.ws.rs.client.ClientRequestFilter;
导入javax.ws.rs.client.ClientResponseContext;
导入javax.ws.rs.client.ClientResponseFilter;
导入javax.ws.rs.ext.WriterInterceptor;
导入javax.ws.rs.ext.WriterInterceptorContext;
@优先级(整数。最小值)
公共类EntityLoggingFilter实现ClientRequestFilter、ClientResponseFilter、WriterInterceptor{
私有静态最终记录器Logger=Logger.getLogger(EntityLoggingFilter.class.getName());
私有静态最终字符串实体\u流\u属性=“EntityLoggingFilter.entityStream”;
私有静态最终字符集DEFAULT_Charset=StandardCharsets.UTF_8;
私有最终整数maxEntitySize=1024*8;
私人作废日志(StringBuilder sb){
logger.info(sb.toString());
}
私有InputStream logInboundEntity(最终StringBuilder b、InputStream流、最终字符集字符集)引发IOException{
如果(!stream.markSupported()){
流=新的BufferedInputStream(流);
}
流标记(maxEntitySize+1);
最终字节[]实体=新字节[maxEntitySize+1];
final int entitySize=stream.read(实体);
b、 追加(新字符串(实体,0,Math.min(entitySize,maxEntitySize),字符集));
如果(entitySize>maxEntitySize){
b、 附加(“…更多…”);
}
b、 追加('\n');
stream.reset();
回流;
}
@凌驾
公共无效筛选器(ClientRequestContext requestContext)引发IOException{
if(requestContext.hasEntity()){
final OutputStream=new LoggingStream(requestContext.getEntityStream());
requestContext.setEntityStream(流);
setProperty(实体\流\属性,流);
}
}
@凌驾
公共无效筛选器(ClientRequestContext requestContext,
ClientResponseContext responseContext)引发IOException{
最终StringBuilder sb=新StringBuilder();
if(responseContext.hasEntity()){
responseContext.setEntityStream(logInboundEntity(sb,responseContext.getEntityStream(),
默认字符集);
日志(sb);
}
}
@凌驾
WriteTo周围的公共无效(WriterInterceptorContext上下文)
抛出IOException、WebApplicationException{
final LoggingStream=(LoggingStream)context.getProperty(ENTITY\u stream\u PROPERTY);
context.procedure();
if(流!=null){
日志(stream.getStringBuilder(默认字符集));
}
}
私有类LoggingStream扩展FilterOutputStream{
私有最终StringBuilder sb=新StringBuilder();
私有最终ByteArrayOutputStream bas=新ByteArrayOutputStream();
记录流(输出流输出){
超级(出局);
}
StringBuilder getStringBuilder(字符集字符集){
//将实体写入生成器
最终字节[]实体=bas.toByteArray();
sb.追加(新字符串(实体,0,实体长度,c