curl (7) Failed connect to localhost8080; Connection refused

curl: (7) Failed connect to localhost:8080; Connection refused

If you are also curl, Baidu is normal, curl (own IP) is normal, but a curl http://localhost:8080 will give you an error, then you can try the following methods!

I have searched for many methods before, saying that the problem of nignx, or the problem of the port, I have tried it for a long time to no avail.Followed by a blogger who said that you can look at the log, I opened the log and looked at it, and found the problem

There is a logs file in the tomcat folder

![Insert image description here](https://img-blog.csdnimg.cn/6ccd79ed9d8443aab0c156c58710f7e2.png

Find the filename of the image above and open it with a text editor
Here tells me that /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.332.b09-1.el7_9.x86_64/jre/bin/java/bin/java is actually installed, but there is noThe so-called /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.332.b09-1.el7_9.x86_64/jre/bin/java/bin/java directory, but /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.332.b09-1.el7_9.x86_64/

So let's check the jdk path now
![Insert picture description here](https://img-blog.csdnimg.cn/aff893cf9c6044e2a39b94ed36276d50.png

Then use vi /etc/profile to modify the path configuration of jdk
Set the previous JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.332.b09-1.el7_9.x86_64/jre/bin/java/bin/java
Change to the current JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.332.b09-1.el7_9.x86_64/jre
![Insert image description here](https://img-blog.csdnimg.cn/d5c1341c19c042f5a36c2fa9d02fe72a.png

Update the next file
source /etc/profile
Restart tomcat, and then curl can access successfully

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