java项目中有如下代码：
@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中启动项目之后包如下错误：
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
参考资料：
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
解决方法：
加上VM options : -XX:-UseSplitVerifier
原因分析：
报异常的方法内使用了Java 7的新特性：自动资源释放，类似于try(){}，即在try后面跟一括号，在括号里面对一些资源赋值，try里面的代码块执行完毕之后会自动释放try后面的括号中声明的资源。
Java 7 会使用新的Class类型校验器，新的类型校验器将老的校验器分为两步：
1、类型推断
2、类型校验
新的类型校验器通过在javac编译时嵌入类型信息到bytecode中，省略了类型推断这一步，从而提升了classloader的性能。
Classload顺序(供参考)
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.