我不是java jock,但我正在尝试学习如何使用node-java。我试图运行npm java和gethub node-java上列出的一个示例,但它们不起作用。我认为我的方法没有在我的node.js脚本中正确初始化。我在Window 10笔记本电脑上使用JDK / JRE 1.8。下面是我的简单代码示例。任何帮助将不胜感激。
var Test = java.import("com.sample.SearchQueryRulesFromTable");
var result = Test.SearchQueryRulesFromTable("C1", "P1");
console.log(result);
node-java
中的错误nodeJavaBridge.js:233
return java.newInstanceSync.apply(java, args);
^
TypeError: Could not find method
"com.sample.SearchQueryRulesFromTable(java.lang.String,
java.lang.String)" on class "class com.sample.SearchQueryRulesFromTable".
Possible matches:
public com.sample.SearchQueryRulesFromTable() at Error (native)
at javaClassConstructorProxy….
以下是我的java代码的一部分:
...
public class SearchQueryRulesFromTable {
...
public static final void main(String[] args) {...
javap的结果
Compiled from "SearchQueryRulesFromTable.java
public class com.sample.SearchQueryRulesFromTable {
public com.sample.SearchQueryRulesFromTable();
descriptor: ()V
public static final void main(java.lang.String[]);
descriptor: ([Ljava/lang/String;)V
}
@AlphaVictor我试图使用似乎不起作用的node-java结构来调用main方法。我不知道我做错了什么。以下是SearchQueryRulesFromTable中的主要方法:
ItemSearch item1 = new ItemSearch();
item1.setSearchCustomer(args[0]);
item1.setSearchItem(args[1]);
使用:
java.callStaticMethodSync("com.sample.SearchQueryRulesFromTable",
"ItemSearch(item1)","C1", "P1", function(err, results) {
if(err) {console.error(err);
javaLangSystem.out.printlnSync('test complete! '+ results);return;}
错误:
C:\Users\rdouglas\AppData\Roaming\npm\node_modules\NewProjects\08-
egilerapp1\classes>node test.js
(node) sys is deprecated. Use util instead.
C:\Users\rdouglas\AppData\Roaming\npm\node_modules\NewProjects\08-
egilerapp1\classes\test.js:14
var result =
java.callStaticMethodSync("com.sample.SearchQueryRulesFromTable",
"ItemSearch","C1", "P1")
^
错误:
Could not find method "ItemSearch(java.lang.String, java.lang.String)" on
class "class com.sample.SearchQueryRulesFromTable". No methods with that
name.
at Error (native)
at Object.<anonymous>
(C:\Users\rdouglas\AppData\Roaming\npm\node_modules\NewProjects\08-
egilerapp1\classes\test.js:14:19)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at startup (node.js:139:18)
at node.js:968:3
答案 0 :(得分:0)
TypeError: Could not find method
"com.sample.SearchQueryRulesFromTable(java.lang.String,
java.lang.String)" on class "class com.sample.SearchQueryRulesFromTable".
此错误告诉您已尝试在类SearchQueryRulesFromTable
上调用接受两个String
参数的构造函数。该类没有定义这样的构造函数。
您的代码正在尝试在此处调用此不存在的构造函数:
SearchQueryRulesFromTable("C1", "P1");
根据您要执行的操作,您可能需要在main
内调用SearchQueryRulesFromTable
方法,并将其传递给String[]
。