java.lang.VerifyError:期望分支目标上的stackmap帧

Question

成功编译了项目并与Maven一起构建.这是我的第一个maven项目.但我不知道为什么我得到以下错误.

在tomcat上部署战争并点击我的网址和浏览器中显示的以下错误.

java.lang.VerifyError: Expecting a stackmap frame at branch target 72
Exception Details:
  Location:
    com/ebetinc/frontend/presentation/components/Login.isToteAvailable(Ljava/lang/String;Lcom/ebetinc/frontend/dao/DatabaseDao;)Z @46: lookupswitch
  Reason:
    Expected stackmap frame at this location.
  Bytecode:
    0000000: 043d 2bb9 03a4 0100 4e2a c601 1c13 03a6
    0000010: 2ab8 03aa 9900 0803 3da7 010d 2db8 03ad
    0000020: 9900 692a 3a04 0236 0519 04b6 03b1 ab00
    0000030: 0000 003a 0000 0002 0000 0626 0000 002c
    0000040: 0000 0644 0000 001a 0019 0413 03b3 b603
    0000050: b599 0017 0336 05a7 0011 1904 1303 b7b6
    0000060: 03b5 9900 0604 3605 1505 ab00 0000 001c
    0000070: 0000 0002 0000 0000 0000 001a 0000 0001
    0000080: 0000 001a 033d a700 a02d b803 ba99 0099
    0000090: 2a3a 0402 3605 1904 b603 b1ab 0000 006a
    00000a0: 0000 0004 0000 af34 0000 0029 0000 af4c
    00000b0: 0000 003a 0000 af4d 0000 004b 0015 51cb
    00000c0: 0000 005c 1904 1303 bcb6 03b5 9900 3903
    00000d0: 3605 a700 3319 0413 03be b603 b599 0028
    00000e0: 0436 05a7 0022 1904 1303 c0b6 03b5 9900
    00000f0: 1705 3605 a700 1119 0413 03c2 b603 b599
    0000100: 0006 0636 0515 05aa 0000 001f 0000 0000
    0000110: 0000 0003 0000 001d 0000 001d 0000 001d
    0000120: 0000 001d 033d 1cac                    
  Stackmap Table:
    append_frame(@28,Integer,Object[#931])
    append_frame(@73,Object[#200],Integer)
    same_frame(@90)
    same_frame(@104)
    same_frame(@132)
    chop_frame(@134,2)
    same_frame(@137)
    append_frame(@196,Object[#200],Integer)
    same_frame(@213)
    same_frame(@230)
    same_frame(@247)
    same_frame(@261)
    same_frame(@292)
    chop_frame(@294,2)

有人可以投入一些投入吗？谢谢你的帮助.

组态:

Java 1.7
Maven 3+

Answer 1

嗨这与您的应用程序中的某些字节码有关.(请参阅有关Java 7兼容性更改的说明http://www.oracle.com/technetwork/java/javase/compatibility-417013.html#incompatibilities,请查看以下JSR 202的行)

你也可以

• 使用JDK 7重新编译所有源代码
• 或者如果您无法访问来源
  • java与paramter一起使用-XX:-UseSplitVerifier
  • 如果您使用交换机遇到问题,请切换到Java 6

编辑即使答案已经有点旧了.由于目前的情况,我添加了一些更详细的解释.

StackMapTableJava 6引入了类文件中的属性,当时甚至没有记录.

Foo.java

public class Foo {
    public static boolean bar(String s) {
        if (s.length() == 0) {
            return true;
        }
        return false;
    }
}

$ java -version
java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
$ javac Foo.java
$ javap -c -v Foo
Compiled from "Foo.java"
public class Foo extends java.lang.Object
  SourceFile: "Foo.java"
  minor version: 0
  major version: 50
...
public static boolean bar(java.lang.String);
  Code:
   Stack=1, Locals=1, Args_size=1
   0:   aload_0
   1:   invokevirtual   #2; //Method java/lang/String.length:()I
   4:   ifne    9
   7:   iconst_1
   8:   ireturn
   9:   iconst_0
   10:  ireturn
  LineNumberTable: 
   line 3: 0
   line 4: 7
   line 6: 9

  StackMapTable: number_of_entries = 1
   frame_type = 9 /* same */
}

类验证器不检查属性是否在类中.

以下创建Foo.class没有StackMatTable属性的文件.

FooDump.java

import org.objectweb.asm.*;
import java.io.*;

public class FooDump implements Opcodes {

    public static void main(String[] args) throws Exception {
        FileOutputStream fos = new FileOutputStream("Foo.class");
        fos.write(dump());
        fos.close();
    }

    public static byte[] dump() throws Exception {
        ClassWriter cw = new ClassWriter(0);
        FieldVisitor fv;

        cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, "Foo", null, "java/lang/Object",
            null);

        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, 
            null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", 
            false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();

        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "bar", 
            "(Ljava/lang/String;)Z", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "length", "()I", 
            false);
        Label l0 = new Label();
        mv.visitJumpInsn(IFNE, l0);
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        mv.visitLabel(l0);
        // this line would generate the StackMapTable attribute
        // mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();

        cw.visitEnd();
        return cw.toByteArray();
    }
}

编译并运行它

$ javac -cp asm-5.2.jar:asm-util-5.2.jar:. FooDump.java
$ java -cp asm-5.2.jar:asm-util-5.2.jar:. FooDump

检查该StackMapTable属性是否不在文件中

$ javap -c -v Foo
public class Foo extends java.lang.Object
  minor version: 0
  major version: 50
...
public static boolean bar(java.lang.String);
  Code:
   Stack=1, Locals=1, Args_size=1
   0:   aload_0
   1:   invokevirtual   #16; //Method java/lang/String.length:()I
   4:   ifne    9
   7:   iconst_1
   8:   ireturn
   9:   iconst_0
   10:  ireturn
}

FooDemo.java

public class FooDemo {
    public static void main(String[] args) {
        System.out.println("output: " + Foo.bar(""));
    }
}

$ java -version
java version "1.6.0"
Java(TM) SE Runtime Environment (build 1.6.0-b105)
$ javac FooDemo.java
$java FooDemo 
output: true

使用Java 7,类验证已更改.

对于类文件版本50(Java 6),如果StackMapTable缺少或错误,则检查具有故障转移(请参阅:jvms-4.10.1).

使用FooJava 6 的类版本运行检查.

$ java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)

$ javap -c -v Foo
Classfile /home/suboptimal/playground/Foo.class
  Last modified Jun 9, 2017; size 232 bytes
  MD5 checksum 5a7ea4a5dd2f6d1bcfddb9ffd720f9c9
public class Foo
  minor version: 0
  major version: 50 <-- class file Java 6
...

$ javac FooDemo.java
$ java FooDemo
output: true

对于类文件版本51(Java 7),不再发生此故障转移.

要创建FooJava 7 的类版本修改代码FooDump.java.

// cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, "Foo", null, "java/lang/Object", null);
cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER, "Foo", null, "java/lang/Object", null);

编译并运行它

$ javac -cp asm-5.2.jar:asm-util-5.2.jar:. FooDump.java
$ java -cp asm-5.2.jar:asm-util-5.2.jar:. FooDump

检查它是否为51版

$ java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)

$ javap -c -v Foo
Classfile /home/suboptimal/playground/Foo.class
  Last modified Jun 9, 2017; size 232 bytes
  MD5 checksum cfd57fb547ac98a1b2808549f5e9e8c1
public class Foo
  minor version: 0
  major version: 51 <-- class file Java 7
...

$ javac FooDemo.java
$ java FooDemo
Exception in thread "main" java.lang.VerifyError: Expecting a stackmap frame at branch target 9 in method Foo.bar(Ljava/lang/String;)Z at offset 4

在Java 7中,StackMapTable可以禁用属性的类型检查,以使用选项UseSplitVerifier返回到Java 6故障转移机制.

$ java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)

$ java -XX:-UseSplitVerifier FooDemo
output: true

在Java 8中,StackMapTable属性的验证变为强制性,并且UseSplitVerifier删除了该选项.

$ java -version
java version "1.8.0"
Java(TM) SE Runtime Environment (build 1.8.0-b132)

$ javap -c -v Foo
Classfile /home/suboptimal/playground/Foo.class
  Last modified Jun 9, 2017; size 232 bytes
  MD5 checksum cfd57fb547ac98a1b2808549f5e9e8c1
public class Foo
  minor version: 0
  major version: 51 <-- class file Java 7
...

$ javac FooDemo.java
$ java FooDemo
Exception in thread "main" java.lang.VerifyError: Expecting a stackmap frame at branch target 9

$ java -XX:-UseSplitVerifier FooDemo
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option UseSplitVerifier; support was removed in 8.0
Exception in thread "main" java.lang.VerifyError: Expecting a stackmap frame at branch target 9

note备注始终使用Java 6/7/8的初始版本是为了表明行为从一开始就存在.

你可能会发现一些建议让它运行Java 8 ...

$ java -noverify FooDemo
output: true

$ java -Xverify:none FooDemo
output: true

note注意这会禁用字节码验证程序.请记住,永远不要禁用生产系统中的字节码验证.