使用@PropertySourceSpring 3.1中的新注释,如何使用Environment访问多个属性文件?
@PropertySource
目前我有:
@Controller @Configuration @PropertySource( name = "props", value = { "classpath:File1.properties", "classpath:File2.properties" }) public class TestDetailsController { @Autowired private Environment env; /** * Simply selects the home view to render by returning its name. */ @RequestMapping(value = "/", method = RequestMethod.GET) public String home(Locale locale, Model model) { String file1Name = env.getProperty("file1.name","file1.name not found"); String file2Name = env.getProperty("file2.name","file2.name not found"); System.out.println("file 1: " + file1Name); System.out.println("file 2: " + file2Name); return "home"; }
结果是 File1.properties中 的正确文件名,但未找到 file2.name 。如何访问 File2.properties ?
有两种不同的方法:第一种是在applicationContext.xml中使用PropertyPlaceHolder: beans-factory- placeholderconfigurer
<context:property-placeholder location="classpath*:META-INF/spring/properties/*.properties"/>
要添加的名称空间是 xmlns:context="http://www.springframework.org/schema/context"
xmlns:context="http://www.springframework.org/schema/context"
如果要在控制器中直接访问键以访问String变量,请使用:
@Value("${some.key}") private String valueOfThatKey;
第二种方法是util:properties在您的applicationContext.xml中使用:
util:properties
<util:properties id="fileA" location="classpath:META-INF/properties/a.properties"/> <util:properties id="fileB" location="classpath:META-INF/properties/b.properties"/>
使用名称空间架构xmlns:util="http://www.springframework.org/schema/util"位置:http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
xmlns:util="http://www.springframework.org/schema/util"
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
然后在您的控制器中:
@Resource(name="fileA") private Properties propertyA; @Resource(name="fileB") private Properties propertyB;
如果要从文件中获取值,请使用方法getProperty(String key)
getProperty(String key)