注意:有時獲取到的項目路徑后再+“自定義路徑后” 路徑不可用,這時要看下項目里自定義路徑是不是空文件夾,如果是空文件夾則調試和運行時文件夾不會編譯到部署文件里.
1.方法一
調試時只能獲取eclipse 項目未編譯前的路徑 不太好用
/* private static Logger logger = Logger.getLogger(BookController.class); */ @RequestMapping("/index") public String bookHandle(HttpServletRequest servlet) { JSONObject json = JsonResourceUtils.getJsonObjFromResource ("static/json/book_nav.json",servlet.getServletContext().getRealPath("/")); return "book"; }
2.方法 二
獲取項目運行時的真實類路徑
/* private static Logger logger = Logger.getLogger(BookController.class); */ @RequestMapping("/index") public String bookHandle(HttpServletRequest servlet) { JSONObject json = JsonResourceUtils.getJsonObjFromResource
/* 這里直接獲取到了文件路徑 */ (BookController.class.getClassLoader().getResource("static/json/book_nav.json").getPath()); return "book"; }
3.用spring 獲取運行時類路徑路徑
String filePath = ClassUtils.getDefaultClassLoader().getResource("").getPath();
4.其它方法
package com.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import java.io.File;
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
@RestController
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class,args);
}
@GetMapping("/lujing")
public void getLujing() throws Exception{
//當前項目下路徑
File file = new File("");
String filePath = file.getCanonicalPath();
System.out.println(filePath);
//當前項目下xml文件夾
File file1 = new File("");
String filePath1 = file1.getCanonicalPath()+File.separator+"xml\\";
System.out.println(filePath1);
//獲取類加載的根路徑
File file3 = new File(this.getClass().getResource("/").getPath());
System.out.println(file3);
//獲取當前類的所在工程路徑
File file4 = new File(this.getClass().getResource("").getPath());
System.out.println(file4);
//獲取所有的類路徑 包括jar包的路徑
System.out.println(System.getProperty("java.class.path"));
}
}