Question

我有一个使用spring的java应用程序，我需要测试。我在Eclipse上安装了Springpython 1.3.0RC的Jython 2.5.2。 java应用程序使用属性文件prop.properties并使用注释：

@Value("${csvdatafetcher.filename:input.csv}")

属性文件是： core.filedatafetcher.filename = test.csv

我正在尝试调用该应用程序：

from springpython.context import ApplicationContext
from springpython.config import SpringJavaConfig
ctx = ApplicationContext(SpringJavaConfig("javaBeans.xml"))
service = ctx.get_object("csvDataFetcher")

使用spring xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans">
....

    <bean id="props" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <value>classpath:classpath:prop.properties</value>
        </property>
    </bean>

    <bean id="csvDataFetcher" class="com.framework.fetchers.CsvFileDataFetcher" />
</beans>

它给了我错误：

Traceback (most recent call last):
  File "/home/nir/.eclipse/org.eclipse.platform_3.6.1_185596441/plugins/org.python.pydev.debug_2.2.4.2011110216/pysrc/pydevd.py", line 1307, in <module>
    debugger.run(setup['file'], None, None)
  File "/usr/share/jython2.5.2/Lib/site-packages/springpython-1.3.0.RC1-py2.5.egg/springpython/container/__init__.py", line 80, in get_object
    comp = self._create_object(object_def)
  File "/usr/share/jython2.5.2/Lib/site-packages/springpython-1.3.0.RC1-py2.5.egg/springpython/container/__init__.py", line 132, in _create_object
    [prop.set_value(obj, self) for prop in object_def.props if hasattr(prop, "set_value")]
  File "/usr/share/jython2.5.2/Lib/site-packages/springpython-1.3.0.RC1-py2.5.egg/springpython/config/_config_base.py", line 149, in set_value
    setattr(obj, self.name, self.value)
TypeError: can't convert 'classpath:spring-config-test.xml' to org.springframework.core.io.Resource;

或使用（而不是bean id =“props”......）：

<context:property-placeholder   location="classpath:prop.properties" />

给了我错误：

Traceback (most recent call last):
  File "/home/nir/.eclipse/org.eclipse.platform_3.6.1_185596441/plugins/org.python.pydev.debug_2.2.4.2011110216/pysrc/pydevd.py", line 1307, in <module>
    debugger.run(setup['file'], None, None)
  File "/usr/share/jython2.5.2/Lib/site-packages/springpython-1.3.0.RC1-py2.5.egg/springpython/container/__init__.py", line 128, in _create_object
    obj = object_def.factory.create_object(self._get_constructors_pos(object_def),
  File "/usr/share/jython2.5.2/Lib/site-packages/springpython-1.3.0.RC1-py2.5.egg/springpython/factory/__init__.py", line 31, in create_object
    parts = self.module_and_class.split(".")
AttributeError: 'NoneType' object has no attribute 'split'

如何将java property-placeholder转换为python spring？
如何注入连接到注释@Value？

谢谢，

Answer 1

如果您阅读http://static.springsource.org/spring-python/1.2.x/sphinx/html/objects-other-formats.html#springjavaconfig了解更多详细信息，这可以让您更清楚地了解SpringJavaConfig和Spring Python的功能。首先，它只支持Spring 2.5 XML格式，并且不包含额外的命名空间。它还适用于在Python系统中配置Python对象，而不是Python系统中的Java对象。我们的想法是简单地提供一种从Java过渡到Python的更平滑方式，而无需重写配置文件。

from springpython.config import PythonConfig
from springpython.config import Object
from com.framework.fetchers import CsvFileDataFetcher

class YourAppContext(PythonConfig):
    def __init__(self):
        self.props = {}
        with open("relative/path/to/your/prop.properties") as f:
            for line in f.readlines():
                key, value = line.split("=")
                self.props[key] = value

    @Object
    def csvDataFetcher(self):
        return CsvFileDataFetcher()

使用以下方式访问您的应用上下文：

from springpython.context import ApplicationContext
ctx = ApplicationContext(YourAppContext())
service = ctx.get_object("csvDataFetcher")

从这里开始，您可以参考ctx.props来访问prop值。请注意，Spring Python没有自动装配，因此属性不会自动注入到内容中。但是使用纯Python代码解析文件非常容易，并且很好地将其隐藏在应用程序上下文中，而后者又可以注入到相关对象中。

如何在Springpython中使用spring java xml文件

1 个答案: