Vorhandene Klassen einfach blind eingefügt

Benötigt einige Nacharbeiten, damit es übersetzbar wird.
2025-04-03 18:58:47 +02:00
parent 77ea70f4e6
commit 8d01fd4935
16 changed files with 1501 additions and 0 deletions
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>de.neitzel.lib</groupId>
+        <artifactId>neitzellib</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>log4j</artifactId>
+
+    <properties>
+        <!-- Application Properties -->
+        <link.name>${project.artifactId}</link.name>
+        <launcher>${project.artifactId}</launcher>
+        <appName>${project.artifactId}</appName>
+        <jar.filename>${project.artifactId}-${project.version}</jar.filename>
+
+        <!-- Dependency Versions -->
+        <log4j.version>1.2.17</log4j.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>${log4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>apache-log4j-extras</artifactId>
+            <version>${log4j.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>${jar.filename}</finalName>
+
+        <plugins>
+            <plugin>
+                <groupId>com.github.spotbugs</groupId>
+                <artifactId>spotbugs-maven-plugin</artifactId>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-pmd-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>
@@ -0,0 +1,75 @@
+package de.neitzel.log4j;
+
+import org.apache.log4j.PropertyConfigurator;
+
+import java.io.File;
+import java.net.URISyntaxException;
+
+/**
+ * Adds Utility Methods for log4j.
+ */
+public class Log4jUtils {
+
+    /**
+     * Default Logfile that should be read.
+     * Must be a relative path that is checked from the current directory and also from the location of the jar file.
+     */
+    public static final String DEFAULT_LOG4J_LOGFILE = "./log4j.properties";
+
+    /**
+     * Resource to use when no file is found.
+     */
+    public static final String DEFAULT_LOG4J_RESOURCE = "/log4j.default.properties";
+
+    /**
+     * Checks if a log4j config file was set on command line with -Dlog4j.configuration
+     * @return true if log4j.configuration was set.
+     */
+    public static boolean isLog4jConfigFileSet() {
+        return System.getProperty("log4j.configuration") != null;
+    }
+
+    /**
+     * Uses the default configurations if no config file was set.
+     */
+    public static void setLog4jConfiguration() {
+        setLog4jConfiguration(DEFAULT_LOG4J_LOGFILE, DEFAULT_LOG4J_RESOURCE);
+    }
+
+    /**
+     * Gets the file with path relative to the jar file.
+     * @param log4jConfigFile log4j config file.
+     * @return Path if possible or null.
+     */
+    public static String getLog4jLogfileAtJar(final String log4jConfigFile) {
+        try {
+            return new File(Log4jUtils.class.getProtectionDomain().getCodeSource().getLocation().toURI()).getParent() + "/" + log4jConfigFile;
+        } catch (URISyntaxException ex) {
+            return null;
+        }
+    }
+
+    /**
+     * Uses the default configurations if no config file was set.
+     * <p>
+     *     A log4j configuration can be set using -Dlog4j.configuration. If no configuration was set,
+     *     we look for the log4jConfigFile. If it does not exist, we read the defaultResource.
+     * </p>
+     * @param log4jConfigFile Default file to look for.
+     * @param defaultResource Resource path to use if config file wasn't found.
+     */
+    public static void setLog4jConfiguration(final String log4jConfigFile, final String defaultResource) {
+        if (isLog4jConfigFileSet()) return;
+
+        String fileAtJar = getLog4jLogfileAtJar(log4jConfigFile);
+
+        if (new File(log4jConfigFile).exists()) {
+            PropertyConfigurator.configure(log4jConfigFile);
+        } else if (fileAtJar != null && new File(fileAtJar).exists()) {
+            System.out.println("Nutze Log4J Konfiguration bei jar File: " + fileAtJar);
+            PropertyConfigurator.configure(fileAtJar);
+        }else {
+            PropertyConfigurator.configure(Log4jUtils.class.getResource(defaultResource));
+        }
+    }
+}