Scala读取application.properties文件内容

我会带着你远行 2022-12-03 15:52 245阅读 0赞

# application.properties #

application.properties文件位于resources目录下

lpf=123
    
    #kudu.master=10.101.15.229,10.101.15.230,10.101.15.231
    kudu.master=szbigdata01,szbigdata02,szbigdata03
    
    health_assess_data_table=health_assess_data
    group_health_assess_result_table=group_health_assess_result
    
    base_tag_table=base_tag
    rule_tag_map_table=rule_tag_map

# ReadPropFileUtil #

package org.fiend.scalatest.util
    
    import java.io.{BufferedInputStream, File, FileInputStream, IOException, InputStream}
    import java.util.Properties
    
    import org.apache.commons.lang3.StringUtils
    
    object ReadPropFileUtil {
        def main(args: Array[String]): Unit = {
            println("kudu.master: " + readProp("kudu.master"))
            println("lpf: " + readProp("lpf"))
        }
    
        @throws[IOException]
        def readProp(name: String): String = {
            val prop = new Properties
    
            // 获取jar包内部或开发环境中resource文件夹下的文件
            val in0 = ReadPropFileUtil.getClass.getClassLoader.getResourceAsStream("application.properties")
            prop.load(in0)
    
            loadCurrPathProp(prop)
    
            val propVal = prop.getProperty(name)
            if (null == propVal) {
                throw new NullPointerException("read properties key={" + name + "}  is null!")
            }
    
            propVal
        }
    
        /**
         * 加载 当前工程目录(或jar包所在目录)下的application.properties文件,
         * 且读取该文件优先级较高, 即该文件内容若与jar包内(或工程内)的application.properties文件内容冲突
         * , 则最终读取该文件相应的内容
         *
         * @param prop p
         */
        @throws[IOException]
        private def loadCurrPathProp(prop: Properties): Unit = {
            val osName = System.getProperty("os.name")
            var fileName: String = null
            if (StringUtils.containsIgnoreCase(osName, "Windows")) {
                fileName = System.getProperty("user.dir") + "\\application.properties"
            } else {
                fileName = System.getProperty("user.dir") + "/application.properties"
            }
    
            val file = new File(fileName)
            if (file.exists) {
                val in = new BufferedInputStream(new FileInputStream(file))
                prop.load(in)
            }
        }
    
        // def readProp0(name: String): String = {
        //     val properties = new Properties()
        //     val path = Thread
        //       .currentThread()
        //       .getContextClassLoader
        //       .getResource("application.properties")
        //       .getPath //文件要放到resource文件夹下
        //     properties.load(new FileInputStream(path))
        //
        //     val propVal = properties.getProperty(name)
        //     if (null == propVal) {
        //         throw new NullPointerException("read properties key={" + name + "}  is null!")
        //     }
        //
        //     propVal
        // }
    }