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体验新版 GitCode,发现更多精彩内容 >>
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5d8a34fe
编写于
2月 28, 2019
作者:
J
Juergen Hoeller
浏览文件
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电子邮件补丁
差异文件
Only prefer JDK 9+ Lookup.defineClass API if ClassLoader matches
Closes gh-22416
上级
7a7c7f51
变更
1
隐藏空白更改
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并排
Showing
1 changed file
with
44 addition
and
18 deletion
+44
-18
spring-core/src/main/java/org/springframework/cglib/core/ReflectUtils.java
...ain/java/org/springframework/cglib/core/ReflectUtils.java
+44
-18
未找到文件。
spring-core/src/main/java/org/springframework/cglib/core/ReflectUtils.java
浏览文件 @
5d8a34fe
...
...
@@ -491,7 +491,10 @@ public class ReflectUtils {
ProtectionDomain
protectionDomain
,
Class
<?>
contextClass
)
throws
Exception
{
Class
c
=
null
;
if
(
contextClass
!=
null
&&
privateLookupInMethod
!=
null
&&
lookupDefineClassMethod
!=
null
)
{
// Preferred option: JDK 9+ Lookup.defineClass API if ClassLoader matches
if
(
contextClass
!=
null
&&
contextClass
.
getClassLoader
()
==
loader
&&
privateLookupInMethod
!=
null
&&
lookupDefineClassMethod
!=
null
)
{
try
{
MethodHandles
.
Lookup
lookup
=
(
MethodHandles
.
Lookup
)
privateLookupInMethod
.
invoke
(
null
,
contextClass
,
MethodHandles
.
lookup
());
...
...
@@ -510,29 +513,52 @@ public class ReflectUtils {
throw
new
CodeGenerationException
(
ex
);
}
}
if
(
protectionDomain
==
null
)
{
protectionDomain
=
PROTECTION_DOMAIN
;
}
if
(
c
==
null
)
{
if
(
classLoaderDefineClassMethod
!=
null
)
{
Object
[]
args
=
new
Object
[]{
className
,
b
,
0
,
b
.
length
,
protectionDomain
};
try
{
if
(!
classLoaderDefineClassMethod
.
isAccessible
())
{
classLoaderDefineClassMethod
.
setAccessible
(
true
);
}
c
=
(
Class
)
classLoaderDefineClassMethod
.
invoke
(
loader
,
args
);
}
catch
(
InvocationTargetException
ex
)
{
throw
new
CodeGenerationException
(
ex
.
getTargetException
());
// Classic option: protected ClassLoader.defineClass method
if
(
c
==
null
&&
classLoaderDefineClassMethod
!=
null
)
{
if
(
protectionDomain
==
null
)
{
protectionDomain
=
PROTECTION_DOMAIN
;
}
Object
[]
args
=
new
Object
[]{
className
,
b
,
0
,
b
.
length
,
protectionDomain
};
try
{
if
(!
classLoaderDefineClassMethod
.
isAccessible
())
{
classLoaderDefineClassMethod
.
setAccessible
(
true
);
}
catch
(
Throwable
ex
)
{
c
=
(
Class
)
classLoaderDefineClassMethod
.
invoke
(
loader
,
args
);
}
catch
(
InvocationTargetException
ex
)
{
throw
new
CodeGenerationException
(
ex
.
getTargetException
());
}
catch
(
Throwable
ex
)
{
// Fall through if setAccessible fails with InaccessibleObjectException on JDK 9+
// (on the module path and/or with a JVM bootstrapped with --illegal-access=deny)
if
(!
ex
.
getClass
().
getName
().
endsWith
(
"InaccessibleObjectException"
))
{
throw
new
CodeGenerationException
(
ex
);
}
}
else
{
throw
new
CodeGenerationException
(
THROWABLE
);
}
// Fallback option: JDK 9+ Lookup.defineClass API even if ClassLoader does not match
if
(
c
==
null
&&
contextClass
!=
null
&&
contextClass
.
getClassLoader
()
!=
loader
&&
privateLookupInMethod
!=
null
&&
lookupDefineClassMethod
!=
null
)
{
try
{
MethodHandles
.
Lookup
lookup
=
(
MethodHandles
.
Lookup
)
privateLookupInMethod
.
invoke
(
null
,
contextClass
,
MethodHandles
.
lookup
());
c
=
(
Class
)
lookupDefineClassMethod
.
invoke
(
lookup
,
b
);
}
catch
(
InvocationTargetException
ex
)
{
throw
new
CodeGenerationException
(
ex
.
getTargetException
());
}
catch
(
Throwable
ex
)
{
throw
new
CodeGenerationException
(
ex
);
}
}
// No defineClass variant available at all?
if
(
c
==
null
)
{
throw
new
CodeGenerationException
(
THROWABLE
);
}
// Force static initializers to run.
Class
.
forName
(
className
,
true
,
loader
);
return
c
;
...
...
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