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Detailed explanation of Python's sample code for calling Java

黄舟
黄舟Original
2017-06-04 10:09:031703browse

This article mainly introduces Python Detailed explanation of calling Java instances. Friends in need can refer to

Detailed explanation of Python calling Java instances

Foreword:

Python is not as good as Java for server-side programming, so Java code may need to be called in this regard

Prerequisite:

Linux Environment

1 Installation jpype1

Test code after installation :

from jpype import *
startJVM(getDefaultJVMPath(), "-ea")
java.lang.System.out.println("Hello World")
shutdownJVM()

2 Call the non-jdk jar package, test.jar

The package contains the com.Test class

package com;
public class Test {
  public String test(String str){
    return str;
  }
}

Python calls the jar package

jar_path = os.path.join(os.path.abspath('.'), 'libs/test.jar')
jpype.startJVM(jpype.getDefaultJVMPath(), "-ea", "-Djava.class.path=%s" % jar_path)
Test = jpype.JClass('com.Test')
# 或者通过JPackage引用Test类
# com = jpype.JPackage('com')
# Test = com.Test
t = Test()
res = t.test("a")
print res
jpype.shutdownJVM()

note: Pay attention to permission issues under Linux

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