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我的web服務是在jersy（restful java）中製作的，我使用Hibernate與mysql數據庫進行通信。我必須重新啓動我的tomcat服務器以恢復我的web服務每天早上
在一天的時間我執行負載測試和其他功能測試，每一件事情的作品，我們離開了我們的工作，下午5點左右在晚上，當我們再次第二天早上通過HTTP 500例外測試Web服務我的web服務，當我們重新啓動它託管的tomcat，我的Web服務恢復，而無需對源代碼或hibernate配置文件進行任何更改。
我使用同一個Hibernate的配置文件，該文件是被其他網絡服務，其工作正常
這裏是我的Hibernate配置文件：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/offerstest</property>
<property name="hibernate.connection.username">root</property>
<property name="show_sql">true</property>
<property name="connection.password">password</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.acquire_increment">1</property>
<property name="hibernate.c3p0.timeout">300</property>
<property name="hibernate.c3p0.idle_test_period">3000</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.jdbc.batch_size">20</property>
<property name="hibernate.cache.use_second_level_cache">false</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hbm2ddl.auto">update</property>
<property name="dynamic-update">true</property>
<mapping resource="person.hbm.xml"/>
<mapping resource="vendor.hbm.xml"/>
<mapping resource="coupons.hbm.xml"/>
<mapping resource="binding.hbm.xml"/>
</session-factory>
</hibernate-configuration>
這是我的web服務類中的HTTP 500錯誤出現其中產生
@Path("/offers")
public class VendorOffers {
VendorCRUD vendorCRUD;
BindingCRUD bindingCRUD;
public VendorOffers() {
// TODO Auto-generated constructor stub
}
@PostConstruct
public void init() {
vendorCRUD = CommunicationSingleton.getInstance().getVendorCRUD();
bindingCRUD = CommunicationSingleton.getInstance().getBindingCRUD();
}
@GET
@Produces(MediaType.APPLICATION_JSON)
// @Produces(MediaType.APPLICATION_XML)
@Path("{mac}/coupons")
public Response getOffers(@PathParam("mac") String mac) {
List<Offer> list = new ArrayList<Offer>();
// get all the offers (Bindings) for the given mac
List<Binding> bindings = bindingCRUD.getMACOffers(mac);
if (bindings != null) {
for (Binding binding : bindings) {
Offer offer = new Offer();
offer.setCoupon_no(binding.getCoupon_no());
offer.setMac(binding.getMac());
offer.setStartDate(binding.getStartdate());
offer.setEndDate(binding.getEnddate());
long vendorid = binding.getVendor_coupon_id();
Vendor vendor = new Vendor();
vendor.setApk("/rest/downloadfile/" + vendorid + "/getapk");// from
// service
vendor.setArtwork1("/rest/downloadfile/" + vendorid
+ "/getArt1");// from service
vendor.setArtwork2("/rest/downloadfile/" + vendorid
+ "/getArt2");// from service
vendor.setIcon("/rest/downloadfile/" + vendorid + "/getIco");// from
// service
vendor.setRedeem_doc("/rest/downloadfile/" + vendorid
+ "/getHtm");// from service
com.learning.CRUDModel.Vendor localvendor = vendorCRUD
.getVendorById(vendorid);
System.out.println("localvendor.getCountry()"+localvendor.getCountry());
vendor.setCountry(localvendor.getCountry()); // from database
vendor.setDescription(localvendor.getDescription());// from
// database
vendor.setHeading(localvendor.getHeading());// from database
vendor.setName(localvendor.getName());// from database
vendor.setPkg_name(localvendor.getPkg_name());// from database
vendor.setVendor_coupon_id(vendorid);// from database
offer.setVendor(vendor);
list.add(offer);
}
GenericEntity<List<Offer>> entity = new GenericEntity<List<Offer>>(list) {};
Response response = Response.ok(entity).build();
return response;
} else {
Response response = Response.noContent().build();
return response;
}
}
}
誤差如下：
Aug 22, 2013 10:07:02 AM com.sun.jersey.spi.container.ContainerResponse mapMappableContainerException
SEVERE: The RuntimeException could not be mapped to a response, re-throwing to the HTTP container
java.lang.NullPointerException
at com.avilyne.rest.resource.VendorOffers.getOffers(VendorOffers.java:71)
at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1483)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1414)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1363)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1353)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:414)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:947)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
行號71這被寫：
com.learning.CRUDModel.Vendor localvendor = vendorCRUD
.getVendorById(vendorid);
這裏是vendorCRUD類：
public class VendorCRUD {
Session session = HibernateUtil.getSession();
public String getVendorApk(String vendor_id){
long id = 0;
try {
id = Long.parseLong(vendor_id);
} catch (NumberFormatException e) {
e.printStackTrace();
}
String apk_path = "not available";
System.out.println("Vendor Id Value:" + vendor_id);
try {
Query query = session.createQuery("from Vendor where Vendor_Coupon_id = :Vendor_Coupon_id ");
query.setParameter("Vendor_Coupon_id",id);
List <Vendor>list = query.list();
if (list.size() > 0) {
apk_path = list.get(0).getApk();
}
} catch (HibernateException ex) {
ex.printStackTrace();
} catch(Exception ex){
ex.printStackTrace();
}
return apk_path;
}
public String getVendorgetArt1(String vendor_id){
long id = 0;
try {
id = Long.parseLong(vendor_id);
} catch (NumberFormatException e) {
e.printStackTrace();
}
String art1_path = "not available";
System.out.println("Vendor Id Value:" + vendor_id);
try {
Query query = session.createQuery("from Vendor where Vendor_Coupon_id = :Vendor_Coupon_id ");
query.setParameter("Vendor_Coupon_id", id);
List <Vendor>list = query.list();
if (list.size() > 0) {
art1_path = list.get(0).getArtwork1();
}
} catch (HibernateException ex) {
ex.printStackTrace();
} catch(Exception ex){
ex.printStackTrace();
}
return art1_path;
}
public String getVendorgetArt2(String vendor_id){
long id = 0;
try {
id = Long.parseLong(vendor_id);
} catch (NumberFormatException e) {
e.printStackTrace();
}
String art1_path = "not available";
System.out.println("Vendor Id Value:" + id);
try {
Query query = session.createQuery("from Vendor where Vendor_Coupon_id = :Vendor_Coupon_id ");
query.setParameter("Vendor_Coupon_id", id);
List <Vendor>list = query.list();
if (list.size() > 0) {
art1_path = list.get(0).getArtwork2();
}
} catch (HibernateException ex) {
ex.printStackTrace();
} catch(Exception ex){
ex.printStackTrace();
}
return art1_path;
}
public String getVendorgetIco(String vendor_id){
long id = 0;
try {
id = Long.parseLong(vendor_id);
} catch (NumberFormatException e) {
e.printStackTrace();
}
String ico_path = "not available";
System.out.println("Vendor Id Value:" + vendor_id);
try {
Query query = session.createQuery("from Vendor where Vendor_Coupon_id = :Vendor_Coupon_id ");
query.setParameter("Vendor_Coupon_id", id);
List <Vendor>list = query.list();
if (list.size() > 0) {
ico_path = list.get(0).getIco();
}
} catch (HibernateException ex) {
ex.printStackTrace();
} catch(Exception ex){
ex.printStackTrace();
}
return ico_path;
}
public String getVendorgetHtm(String vendor_id){
long id = 0;
try {
id = Long.parseLong(vendor_id);
} catch (NumberFormatException e) {
e.printStackTrace();
}
String htm_path = "not available";
System.out.println("Vendor Id Value:" + vendor_id);
try {
Query query = session.createQuery("from Vendor where Vendor_Coupon_id = :Vendor_Coupon_id ");
query.setParameter("Vendor_Coupon_id", id);
List <Vendor>list = query.list();
if (list.size() > 0) {
htm_path = list.get(0).getRedeem_doc();
}
} catch (HibernateException ex) {
ex.printStackTrace();
} catch(Exception ex){
ex.printStackTrace();
}
return htm_path;
}
public List<Vendor> getVendorsForCountry(String country){
List<Vendor> vendors = null;
try {
Query query = session.createQuery("from Vendor where Country = :Country ");
query.setParameter("Country", country);
List <Vendor>list = query.list();
if (list.size() > 0) {
vendors = list;
}
} catch (HibernateException ex) {
ex.printStackTrace();
}catch(Exception ex){
ex.printStackTrace();
}
return vendors;
}
public Vendor getVendorById(long vendorid) {
Vendor uniquevendor = null;
try {
Query query = session.createQuery("from Vendor where Vendor_Coupon_id = :Vendor_Coupon_id ");
query.setParameter("Vendor_Coupon_id", vendorid);
List <Vendor>list = query.list();
if (list.size() > 0) {
uniquevendor = list.get(0);
}
} catch (HibernateException ex) {
ex.printStackTrace();
} catch(Exception ex){
ex.printStackTrace();
}
return uniquevendor;
}
}
供應商如何提供實例化，看起來像你有你的粗俗線程問題 – NimChimpsky
我不明白你想知道什麼，據我所知，我已經創建單身類從我得到vendorCRUD對象 – focode
我已經做了很多負載測試，從JMeter進行負載測試時沒有問題，只有當我們在晚上離開工作時纔會出現問題，並且在早上我們嘗試點擊服務，它說http 500例外 – focode