使用init读取WEB-INF文件夹java中的属性文件
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Read Properties file in WEB-INF folder java using init
提问by ErrorNotFoundException
I am trying to Read a properties file inside WEB-INF but all I am getting is null. I am completely new to java web development.
我正在尝试读取 WEB-INF 中的属性文件，但我得到的只是空值。我对 Java Web 开发完全陌生。
My init method:
我的初始化方法：
@Override
public void init() throws ServletException {
try {
String path = "";
path = "/WEB-INF/" + getServletContext().getInitParameter("monpesapropertiesfile");
String realPath;
realPath = getServletContext().getRealPath(path);
if(realPath != null){
InputStream fis = new FileInputStream(realPath);
prop.load(fis);
}
} catch (Exception asd) {
System.out.println(asd.getMessage());
}
}
public String getDatabaseUrl() {
String url = prop.getProperty("database.url");
return url;
}
My Web.xml:
我的 Web.xml：
<context-param>
<param-name>monpesapropertiesfile</param-name>
<param-value>monpesaproperties.properties</param-value>
</context-param>
<servlet>
<servlet-name>ReadProperty</servlet-name>
<servlet-class>com.monpesa.properties.ReadProperty</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
I know I must be missing something because the String getDataBaseUrl Returns null. Please help.
我知道我一定遗漏了一些东西，因为 String getDataBaseUrl 返回 null。请帮忙。
采纳答案by acc15
Check this out:
看一下这个：
<context-param>
<param-name>monpesapropertiesfile</param-name>
<param-value>/WEB-INF/monpesaproperties.properties</param-value>
</context-param>
public void init() throws ServletException {
try {
String path = getServletContext().getInitParameter("monpesapropertiesfile");
final InputStream is = getServletContext().getResourceAsStream(path);
try {
prop.load(is);
} finally {
is.close();
}
} catch (Exception asd) {
System.out.println(asd.getMessage());
}
}
回答by Thilo
I would either
我要么
1) put the properties into WEB-INF/classesand use getClass().getResourceAsStream()to load it.
1）将属性放入WEB-INF/classes并使用getClass().getResourceAsStream()加载它。
or
或者
2) put the full file path into web.xml (and place the file outside of the web application into a user-editable configuration area)
2) 将完整的文件路径放入 web.xml (并将 web 应用程序之外的文件放入用户可编辑的配置区域)
