[英]Invoking method on a Java class from lotus script (LS2J)
Most dignified developers, 最有尊严的开发者,
I'm having trouble invoking a method on my own java class from a lotus script agent. 我在从Lotus脚本代理调用我自己的java类中的方法时遇到问题。
My Java class simplified looks like this 我简化的Java类看起来像这样
import lotus.domino.*;
public class MyClass{
/* .. omitted constructor and other methods .. */
public void myMethod(Document doc){
/* ... do things with the document object ...*/
}
}
Now this class is included with the proper use statement, and I can iterate over the classmethods on the class object in lotus script to get the signature of the arguments needed. 现在这个类包含在正确的use语句中,我可以在lotus脚本中迭代class对象上的classmethods来获取所需参数的签名。
But when I try to invoke the method I get a LS2J: Parameter mismatch calling Method myMethod
但是当我尝试调用该方法时,我得到一个
LS2J: Parameter mismatch calling Method myMethod
I've tried both with dot notation on the JavaObject (No I'm not using a Mac ;)) and ADT 我在JavaObject上尝试了点符号(不,我没有使用Mac;))和ADT
Dim doc as NotesDocument
Dim jSession As JavaSession
Dim jClass As JavaClass
Dim jObject As JavaObject
...
Set jSession = New JavaSession()
Set jClass = jSession.Getclass("MyClass")
Set jObject = jClass.Createobject()
Call jObject.myMethod(doc)
and respectively 和分别
Dim jMethod as JavaMethod
...
Set jMethod = jClass.Getmethod("myMethod", "(Llotus/domino/Document;)V")
tmp = jMethod.Invoke(jObject,doc)
Also I've added error handling (OnError ..) to print out the results of any JavaError (+ stacktrace) but they end up empty so no further clues there. 此外,我添加了错误处理(OnError ..)来打印出任何JavaError(+ stacktrace)的结果,但它们最终为空,因此没有进一步的线索。
I'm using Designer version 9.0 我正在使用Designer 9.0版
Any ideas/pointers/gotchas? 任何想法/指针/陷阱? It's driving me bald.
它让我秃顶。
You are using the correct approach to calling your Java method but you can not pass Notes backend objects as parameters. 您正在使用正确的方法来调用Java方法,但是您无法将Notes后端对象作为参数传递。
You can parse a string with the document universal id, for instance, and then in your Java method look up the document using the universal id. 例如,您可以使用文档通用ID解析字符串,然后在Java方法中使用通用ID查找文档。
Alternatively, migrate your Lotusscript logic to Java :-) 或者,将您的Lotusscript逻辑迁移到Java :-)
Maybe you don't need CreateObject.. 也许你不需要CreateObject ..
This is how I do it: 我是这样做的:
Dim jSession As New JavaSession()
Dim jClass As JavaClass()
Set jClass = jSession.GetClass("MyClass")
If jClass.myMethod(doc) Then
Full example added 完整示例添加
Java class:
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
public class GetFileFromUrl {
public static boolean getFileFromUrl(String imageUrl, String filePath) {
try {
URL url = new URL(imageUrl);
InputStream is = url.openStream();
OutputStream os = new FileOutputStream(filePath);
byte[] b = new byte[2048];
int length;
while ((length = is.read(b)) != -1) {
os.write(b, 0, length);
}
is.close();
os.close();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
}
LotusScript: LotusScript中:
UseLSX "*javacon"
Use "GetFileFromUrl"
Private Function GetFileFromUrl(url As String, outputPath As String) As Boolean
Dim jSession As New JavaSession
Dim jClass As JavaClass
Set jClass = jSession.GetClass("GetFileFromUrl")
If jClass.getFileFromUrl(url, outputPath) Then
GetFileFromUrl = True
End If
End Function
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