Spring 的 jdk 版本检测在 jdk 8 下的修订:only available on JDK 1.5 and higher 错误
2017-08-01 00:00
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1、在项目中创建一个package为org.springframework.core
2、在该 package 下面新建 JdkVersion.java,内容如下:
package org.springframework.core; public abstract class JdkVersion { public static final int JAVA_13 = 0; public static final int JAVA_14 = 1; public static final int JAVA_15 = 2; public static final int JAVA_16 = 3; public static final int JAVA_17 = 4; //for jre 1.8 public static final int JAVA_18 = 5; private static final String javaVersion = System .getProperty("java.version"); private static final int majorJavaVersion; public static String getJavaVersion() { return javaVersion; } public static int getMajorJavaVersion() { return majorJavaVersion; } public static boolean isAtLeastJava14() { return true; } public static boolean isAtLeastJava15() { return getMajorJavaVersion() >= 2; } public static boolean isAtLeastJava16() { return getMajorJavaVersion() >= 3; } static { //for jre 1.8 if (javaVersion.indexOf("1.8.") != -1) { majorJavaVersion = 5; }else if (javaVersion.indexOf("1.7.") != -1) { majorJavaVersion = 4; } else if (javaVersion.indexOf("1.6.") != -1) { majorJavaVersion = 3; } else if (javaVersion.indexOf("1.5.") != -1) { majorJavaVersion = 2; } else { majorJavaVersion = 1; } } }
3、找到相应 jar 包(spring.jar,不同版本 jar 包可能不同)的类进行替换
用新编译出的 JdkVersion.class 文件替换 org.springframework.core 中的 JdkVersion.class 文件**替换方法:**找到 jar 包,用解压缩软件打开,定位到相应目录,直接把 JdkVersion.class 文件拖进去覆盖。
参考链接:https://yq.aliyun.com/articles/1291
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