如何JS运行使用弹簧

Question

我用下面的代码通过运行春季数据

ScriptOperations scriptOps = mongoOperation.scriptOps(); 

// Execute script directly 
ExecutableMongoScript echoScript = new ExecutableMongoScript("function(x) { return x; }"); 
Object ob=scriptOps.execute(echoScript, "directly execute script"); 
System.out.println(ob); 

// Register script and call it later 
scriptOps.register(new NamedMongoScript("runjs", "D:\\GSTR3\\gstr3b.1.a.js")); 
scriptOps.call("runjs", "execute script via name"); 

的“echoScript”运行中的JS蒙戈脚本，但“runjs”在蒙戈文件给出错误：

Caused by: com.mongodb.CommandFailureException: { "serverUsed" : "/10.144.113.138:27017" , "ok" : 0.0 , "errmsg" : "ReferenceError: runjs is not defined :\n_funcs1@:1:24\n" , "code" : 139 , "codeName" : "JSInterpreterFailure"} 
at com.mongodb.CommandResult.getException(CommandResult.java:71) 
at com.mongodb.CommandResult.throwOnError(CommandResult.java:110) 
at com.mongodb.DB.eval(DB.java:358) 
at org.springframework.data.mongodb.core.DefaultScriptOperations$2.doInDB(DefaultScriptOperations.java:119) 
at org.springframework.data.mongodb.core.MongoTemplate.execute(MongoTemplate.java:446) 
... 2 more 

但是，如果我用node.js的正常运行该脚本，我得到的结果是：

D:\GSTR3>node gstr3b.1.a.js 
{ Gstin: '27AIXPT3280A1Z2', 
    t_ival: 100003.78, 
    t_iamt: 0, 
    t_camt: 173520.1, 
    t_samt: 173527.69999999998, 
    t_itm_count: 33 } 
D:\GSTR3> 

Answer 1

scriptOps.register需要ExecutableMongoScri pt作为参数，语法：scriptOps.register（ExecutableMongoScript arg0）和NamedMongoScript带有两个参数，语法：NamedMongoScript（String name，ExecutableMongoScript script），它从不需要JavaScript路径。

因此，我们可以做的是将.js脚本作为Java处理器运行并等待其完成并从输入流中获取输出。

try{ 
    String nodejsPath = "D:\\GSTR3\\gstr3b.1.a.js"; 
    String cmd = "node " + nodejsPath; 
    Runtime run = Runtime.getRuntime(); 
    Process pr = run.exec(cmd); 
    pr.waitFor(); 
    } catch (InterruptedException ex) { 
      ex.printStackTrace(); 
    }