intellij-idea - Error when running java program in intellij idea?

My configuration is as follows: The java environment variables are also configured correctly. How to solve it?

From [Javadiscussion group] 2017-05-18 10:43:53 0  1  646

javascript - 400 bad request appears in Ajax request background

Problem solved: I found that the select data is a string array by default, so when passing parameters in ajax,...

From [Javadiscussion group] 2017-05-17 10:09:27 0  2  966

java - a generic tag problem

A newbie asks a generic question {code...}

From [Javadiscussion group] 2017-05-17 10:09:25 0  1  641

The java servlet background exports tens of thousands of data to excel, which is too slow! Solve

Any good ideas? ?

From [Javadiscussion group] 2017-05-17 10:09:22 0  1  771

Is there any difference between the Enumeration and Enum interfaces in Java?

What's the connection between them?

From [Javadiscussion group] 2017-05-17 10:09:17 0  1  688

javascript - Is there any simpler way to distribute the elements of a collection equally to another array object?

Array A=["G","D","B","H"], the number of elements is variable, and the...

From [Javadiscussion group] 2017-05-17 10:09:17 0  2  655

java - Why when accessing files through servlet, b.exe is converted to download, and a.png is opened with a browser? How to convert a.png to download?

How to convert a.png to download?

From [Javadiscussion group] 2017-05-17 10:09:15 0  1  605

Java enum variables cannot be defined repeatedly in cases?

I need to assign a value to a variable based on the content of the string, but the variable type is different....

From [Javadiscussion group] 2017-05-17 10:09:15 0  1  933

java - When the action in the form fills in the relative address, why do these two methods have the same effect?

What does this/stand for? It can't be the root directory, right? The name of the project is test

From [Javadiscussion group] 2017-05-17 10:09:12 0  3  563

Atom Chinese problem

Atom Java code {code...} python code {code...} uses script plug-in. Is there a way to solve it?

From [Javadiscussion group] 2017-05-17 10:09:10 0  1  532

Lucene - java web Now use the search function, which one is better?

When building a picture browsing site, a picture contains n tags. Now it is divided into a table for pictures,...

From [Javadiscussion group] 2017-05-17 10:09:09 0  4  599

java - When submitting a form, why does the action sometimes need to write the project name, and sometimes it only needs to write the servlet?

Why do we need to write the project name in the action? day08-request is the project name. Sometimes just writ...

From [Javadiscussion group] 2017-05-17 10:09:08 0  4  834

java - Why does it report 404 when directly accessing static resources under webroot?

(www.sf.gg) is China's leading developer technology community. We hope to provide a pure, high-quality technic...

From [Javadiscussion group] 2017-05-17 10:09:07 0  5  520

java - springmvc How to implement different paths between PC and mobile terminals, using freemaker for view analysis

I want springmvc to implement different paths between PC and mobile. I use freemaker for view analysis and I h...

From [Javadiscussion group] 2017-05-17 10:09:06 0  3  770

java - trade-off between sql performance and high concurrency

SELECT {code...} It is possible to simply use multi-table association. If high concurrency is encountered, per...

From [Javadiscussion group] 2017-05-17 10:09:04 0  1  605