Intellij IDEA 怎么向Eclipse一样在编译jar文件的时候修改jdk版本

Intellij IDEA 怎么向Eclipse一样在编译jar文件的时候修改jdk版本

可以试试
在jar包中，用winrar解压一个类文件，然后在命令行下面输入
javap -verbose classname
会输出一些信息，大致如下:
Compiled from "HtmlCrawer.java"
public class org.eagleeye.html.HtmlCrawer extends java.lang.Object
SourceFile: "HtmlCrawer.java"
minor version: 0
major version: 50
Constant pool:
const #1 = class #2; // org/eagleeye/html/HtmlCrawer
const #2 = Asciz org/eagleeye/html/HtmlCrawer;
const #3 = class #4; // java/lang/Object
const #4 = Asciz java/lang/Object;
const #5 = Asciz client;