用jython实现java调用python

1. 在Eclipse中创建springboot工程（maven）
   
   
2. 配置pom.xml
   
   <?xml version="1.0" encoding="UTF-8"?>
   <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
       <modelVersion>4.0.0</modelVersion>
       <parent>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-parent</artifactId>
           <version>3.0.5</version>
           <relativePath/> <!-- lookup parent from repository -->
       </parent>
       <groupId>com.example</groupId>
       <artifactId>demo</artifactId>
       <version>0.0.1-SNAPSHOT</version>
       <packaging>war</packaging>
       <name>demo</name>
       <description>Demo project for Spring Boot</description>
       <properties>
           <java.version>17</java.version>
       </properties>
       <dependencies>
           <dependency>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-web</artifactId>
           </dependency>
           
           <dependency>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-json</artifactId>
           </dependency>
   
           <dependency>
               <groupId>org.python</groupId>
               <artifactId>jython-slim</artifactId>
               <version>2.7.3</version>
           </dependency>
           <dependency>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-test</artifactId>
               <scope>test</scope>
           </dependency>
       </dependencies>
   
       <build>
           <plugins>
               <plugin>
                   <groupId>org.springframework.boot</groupId>
                   <artifactId>spring-boot-maven-plugin</artifactId>
               </plugin>
           </plugins>
       </build>
   
   </project>
3. 编写python代码  
    /src/main/resources/case.py
   
   class RequestObj:
       def __init__(self,requestId):
           self.requestid=requestId
           
   class ResponseObj:
       def __init__(self,apiId):
           self.apiId=apiId
           
   def testAPI(requestObj):
       if requestObj.requestId == "1" :
           responseObj=ResponseObj("/test/1")
       elif requestObj.requestId == "2" :
           responseObj=ResponseObj("/test/2")
       else:
           responseObj=ResponseObj("/test")
       return responseObj
4. 编写java代码 
   /src/main/java/com/example/demo/json/Request.java
   
   package com.example.demo.json;
   
   public class Request {
       private String requsetId;
       private String name;
   
       public String getName() {
           return name;
       }
   
       public void setName(String name) {
           this.name = name;
       }
   
       public String getRequsetId() {
           return requsetId;
       }
   
       public void setRequsetId(String requsetId) {
           this.requsetId = requsetId;
       }
   
   }
   /src/main/java/com/example/demo/json/Response.java
   
   package com.example.demo.json;
   
   public class Response {
       private String apiId;
   
       public String getApiId() {
           return apiId;
       }
   
       public void setApiId(String apiId) {
           this.apiId = apiId;
       }
       
   }
   /src/main/java/com/example/demo/RestAPIController.java
   
   package com.example.demo;
   
   import java.io.IOException;
   
   import org.python.core.PyFunction;
   import org.python.core.PyObject;
   import org.python.core.PyString;
   import org.python.util.PythonInterpreter;
   import org.springframework.core.io.ClassPathResource;
   import org.springframework.core.io.Resource;
   import org.springframework.web.bind.annotation.GetMapping;
   import org.springframework.web.bind.annotation.PostMapping;
   import org.springframework.web.bind.annotation.RequestBody;
   import org.springframework.web.bind.annotation.RestController;
   
   import com.example.demo.json.Request;
   import com.example.demo.json.Response;
   
   @RestController
   public class RestAPIController {
       private static PythonInterpreter interpreter;
       private static Resource resource = new ClassPathResource("case.py");
       private static String path;
       static {
           interpreter = new PythonInterpreter();
           try {
               path = resource.getFile().getPath();
           } catch (IOException e) {
               e.printStackTrace();
           }
       }
   
       private Response callPythonFunc(String funcName, Request request) {
           interpreter.execfile(path);
           PyObject requestObj = interpreter.get("RequestObj", PyObject.class);
           requestObj.__setattr__("requestId", new PyString(request.getRequsetId()));
           PyFunction function = interpreter.get(funcName, PyFunction.class);
           PyObject responseObj = function.__call__(requestObj);
           String apiId = responseObj.__getattr__("apiId").toString();
           Response response = new Response();
           response.setApiId(apiId);
           return response;
       }
   
   
       
       @GetMapping("/test/get")
       public String test1() {
           Request request = new Request();
           request.setRequsetId("1");
           Response response = callPythonFunc("testAPI", request);
           return response.getApiId();
       }
   
       @PostMapping("/test/post")
       public Response test2(@RequestBody Request request) {
           Response response = callPythonFunc("testAPI", request);
           return response;
       }
   }
   
   
5. 运行springboot应用程序,console信息如下
   
    /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
   ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
    \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
     '  |____| .__|_| |_|_| |_\__, | / / / /
    =========|_|==============|___/=/_/_/_/
    :: Spring Boot ::                (v3.0.5)
   2023-05-20T23:07:51.546+09:00  INFO 17548 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication using Java 17.0.6 with PID 17548 (D:\pleiades\workspace\demo\target\classes started by lzqdi in D:\pleiades\workspace\demo)
   2023-05-20T23:07:51.550+09:00  INFO 17548 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to 1 default profile: "default"
   2023-05-20T23:07:52.760+09:00  INFO 17548 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
   2023-05-20T23:07:52.777+09:00  INFO 17548 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
   2023-05-20T23:07:52.778+09:00  INFO 17548 --- [           main] o.apache.catalina.core.StandardEngine    : Starting Servlet engine: [Apache Tomcat/10.1.7]
   2023-05-20T23:07:52.904+09:00  INFO 17548 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
   2023-05-20T23:07:52.908+09:00  INFO 17548 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1286 ms
   2023-05-20T23:07:55.673+09:00  INFO 17548 --- [           main] o.s.b.a.w.s.WelcomePageHandlerMapping    : Adding welcome page: class path resource [static/index.html]
   2023-05-20T23:07:55.832+09:00  INFO 17548 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
   2023-05-20T23:07:55.846+09:00  INFO 17548 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 4.604 seconds (process running for 5.36)
   2023-05-20T23:08:36.469+09:00  INFO 17548 --- [nio-8080-exec-2] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
   2023-05-20T23:08:36.469+09:00  INFO 17548 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
   2023-05-20T23:08:36.474+09:00  INFO 17548 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed initialization in 5 ms
6. 启动Postman进行测试
   
   
   
   
   
   ■项目文件构成如下
   
   

posted on 2023-05-20 22:54 我为J狂 阅读(166) 评论(0)  编辑  收藏 所属分类: 开源框架