正常方法
用更高的版本,因为spring向下兼容。
我公司需求的方法(真 迟早跑路)
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、到项目的WEB-INF/classes 下面找到对应的package中的JdkVersion.class文件
4、将项目中的spring-core-2.5.6.jar拷贝出来打开,然后将JdkVersion.class替换jar包中的该文件。
5、将修改后的spring-core-2.5.6.jar再覆盖到项目中。