java項目中有如下代碼：
@RequestMapping(value = "/getMxList")
@ResponseBody
public Map<String, Object> getMxList(HttpServletRequest req, Model model) throws ManagerException {
String reportType = CommonUtil.getStrValue(req.getParameter("reportType"), "");
try (CacheContext context = new CacheContext()) {
if (reportType.equals("shop")) {
return shopItemInvoicingReport(req, model, context);
} else {
return ItemInvoicingReport(req, model, context);
}
} catch (ManagerException e) {
throw e;
} catch (Exception e) {
throw new ManagerException(e);
} finally {
String ticket = StringUtils.isEmpty(req.getParameter("tiket")) ? "" : String.valueOf(req
.getParameter("tiket"));
if (!StringUtils.isNotEmpty(ticket))
req.getSession().removeAttribute(ticket);
}
}
在eclipse中啟動項目之后包如下錯誤：
Exception Details:
Location:
cn/wonhigh/retail/gms/web/controller/ItemInvoicingReportController.getMxList(Ljavax/servlet/http/HttpServletRequest;Lorg/springframework/ui/Model;)Ljava/util/Map; @81: aload_1
Reason:
Type top (current frame, locals[9]) is not assignable to 'java/lang/String' (stack map, locals[9])
Current Frame:
bci: @73
flags: { }
locals: { 'cn/wonhigh/retail/gms/web/controller/ItemInvoicingReportController', 'javax/servlet/http/HttpServletRequest', 'org/springframework/ui/Model', 'java/lang/String', 'java/lang/Throwable', 'java/lang/Throwable', 'cn/wonhigh/retail/mdm/api/util/CacheContext', top, 'java/util/Map' }
stack: { integer }
Stackmap Frame:
bci: @81
flags: { }
locals: { 'cn/wonhigh/retail/gms/web/controller/ItemInvoicingReportController', 'javax/servlet/http/HttpServletRequest', 'org/springframework/ui/Model', 'java/lang/String', 'java/lang/Throwable', 'java/lang/Throwable', 'cn/wonhigh/retail/mdm/api/util/CacheContext', top, 'java/util/Map', 'java/lang/String' }
stack: { }
Bytecode:
0000000: 1100 0457 2b12 7cb9 007e 0200 1233 b800
0000010: 844e 013a 0401 3a05 bb00 8a59 b700 8c3a
0000020: 062d 128d b600 8f99 004f 2a2b 2c19 06b6
0000030: 0093 3a08 1906 c600 0819 06b6 0097 2b12
0000040: 9ab9 007e 0200 b800 9c99 0008 1233 a700
0000050: 0e2b 129a b900 7e02 00b8 00a2 3a09 1909
0000060: b800 a69a 0010 2bb9 00a9 0100 1909 b900
0000070: ad02 0019 08b0 2a2b 2c19 06b6 00b2 3a08
0000080: 1906 c600 0819 06b6 0097 2b12 9ab9 007e
0000090: 0200 b800 9c99 0008 1233 a700 0e2b 129a
00000a0: b900 7e02 00b8 00a2 3a09 1909 b800 a69a
00000b0: 0010 2bb9 00a9 0100 1909 b900 ad02 0019
00000c0: 08b0 3a04 1906 c600 0819 06b6 0097 1904
00000d0: bf3a 0519 04c7 000a 1905 3a04 a700 1419
00000e0: 0419 05b8 037d 9900 0a19 0419 05b6 00b5
00000f0: 1904 bf3a 0419 04bf 3a04 bb00 2e59 1904
0000100: b700 bbbf 3a07 2b12 9ab9 007e 0200 b800
0000110: 9c99 0008 1233 a700 0e2b 129a b900 7e02
0000120: 00b8 00a2 3a09 1909 b800 a69a 0010 2bb9
0000130: 00a9 0100 1909 b900 ad02 0019 07bf
Exception Handler Table:
bci [33, 52] => handler: 194
bci [62, 128] => handler: 194
bci [138, 194] => handler: 194
bci [24, 209] => handler: 209
bci [18, 62] => handler: 243
bci [118, 138] => handler: 243
bci [194, 243] => handler: 243
bci [18, 62] => handler: 248
bci [118, 138] => handler: 248
bci [194, 243] => handler: 248
bci [18, 62] => handler: 260
bci [118, 138] => handler: 260
bci [194, 260] => handler: 260
Stackmap Table:
full_frame(@62,{Object[#1],Object[#127],Object[#106],Object[#88],Object[#182],Object[#182],Object[#138],Top,Object[#194]},{})
append_frame(@81,Object[#88])
same_locals_1_stack_item_frame(@92,Object[#88])
chop_frame(@115,1)
chop_frame(@118,2)
append_frame(@138,Top,Object[#194])
append_frame(@157,Object[#88])
same_locals_1_stack_item_frame(@168,Object[#88])
chop_frame(@191,1)
full_frame(@194,{Object[#1],Object[#127],Object[#106],Object[#88],Object[#182],Object[#182],Object[#138]},{Object[#182]})
chop_frame(@206,1)
same_locals_1_stack_item_frame(@209,Object[#182])
same_frame(@223)
same_frame(@240)
full_frame(@243,{Object[#1],Object[#127],Object[#106],Object[#88]},{Object[#46]})
same_locals_1_stack_item_frame(@248,Object[#80])
same_locals_1_stack_item_frame(@260,Object[#182])
full_frame(@281,{Object[#1],Object[#127],Object[#106],Object[#88],Top,Top,Top,Object[#182]},{})
same_locals_1_stack_item_frame(@292,Object[#88])
same_frame(@315)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:607)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925)
at org.springframework.context.support.AbstractApplicationContext.__refresh(AbstractApplicationContext.java:472)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1284)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1197)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5231)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5518)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1575)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1565)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.VerifyError: Inconsistent stackmap frames at branch target 81
Exception Details:
Location:
cn/wonhigh/retail/gms/web/controller/ItemInvoicingReportController.getMxList(Ljavax/servlet/http/HttpServletRequest;Lorg/springframework/ui/Model;)Ljava/util/Map; @81: aload_1
Reason:
Type top (current frame, locals[9]) is not assignable to 'java/lang/String' (stack map, locals[9])
Current Frame:
bci: @73
flags: { }
locals: { 'cn/wonhigh/retail/gms/web/controller/ItemInvoicingReportController', 'javax/servlet/http/HttpServletRequest', 'org/springframework/ui/Model', 'java/lang/String', 'java/lang/Throwable', 'java/lang/Throwable', 'cn/wonhigh/retail/mdm/api/util/CacheContext', top, 'java/util/Map' }
stack: { integer }
Stackmap Frame:
bci: @81
flags: { }
locals: { 'cn/wonhigh/retail/gms/web/controller/ItemInvoicingReportController', 'javax/servlet/http/HttpServletRequest', 'org/springframework/ui/Model', 'java/lan十月 21, 2015 11:26:11 上午 org.apache.catalina.core.ApplicationContext log
參考資料：
http://stackoverflow.com/questions/7970622/java-7-jvm-verifyerror-in-eclipse
https://bugs.eclipse.org/bugs/show_bug.cgi?id=353467
https://bugs.eclipse.org/bugs/show_bug.cgi?id=353467#c3
http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html
解決方法：
加上VM options : -XX:-UseSplitVerifier
原因分析：
報異常的方法內使用了Java 7的新特性：自動資源釋放，類似於try(){}，即在try后面跟一括號，在括號里面對一些資源賦值，try里面的代碼塊執行完畢之后會自動釋放try后面的括號中聲明的資源。
Java 7 會使用新的Class類型校驗器，新的類型校驗器將老的校驗器分為兩步：
1、類型推斷
2、類型校驗
新的類型校驗器通過在javac編譯時嵌入類型信息到bytecode中，省略了類型推斷這一步，從而提升了classloader的性能。
Classload順序(供參考)
load -> verify -> prepare -> resove -> init
- -XX:+UseSplitVerifier
-
Enables splitting of the verification process. By default, this option was enabled in the previous releases, and verification was split into two phases: type referencing (performed by the compiler) and type checking (performed by the JVM runtime). This option was deprecated in JDK 8, and verification is now split by default without a way to disable it.
As of Java 7, compiled bytecode has to contain additional StackMapTable attributes. These help the verifier inside the JVM to check that classes are soundly constructed, at class loading time. Earlier versions of Java are more lenient, falling back on the slower verification without attributes.
Tools that modify the original compiled bytecode (ProGuard right after the compilation, AOP frameworks right before the execution,...) need to update the attributes consistently with the modified code. If they fail to do so, you'll get the error message "Inconsistent stackmap frames".
ProGuard should perform this preverification fine; I'm not aware of any problems with it. If you still see the error without applying ProGuard, the problem must lie with the DI or AOP.