我正在制作一个 Java GUI 来配合我同事的定制 R 包 IntramiRExploreR，其中包括一个通过 igraph 和 IntramiRExploreR 的可视化函数创建交互式图形的函数，使用以下参数:
Visualisation(miR,mRNA_type=c('GeneSymbol'),method,thresh,platform=Platform,visualisation = 'igraph',layout = 'interactive')
其中 miR 是通过选定的 JCheckboxes 生成的载体，方法、thresh 和平台是从 JRadioButtons 填充的。我毫不怀疑函数本身以及变量的填充方式是正确的，因为我已经在 R 中运行了该函数并使用文本输出格式运行了该函数并且都运行正确。
代码首先使用
的结果正确填写 JTable Visualisation(miR,mRNA_type=c('GeneSymbol'),method,thresh,platform=Platform)
输出可使用
访问的文本 caller.getParser().getAsStringArray(//one of seven parameters)
然后提供一个 JButton，使用相同的参数和对象来调用前面提到的 R 中的 igraph 函数。但是，当单击 JButton 时，会创建 igraph，但一旦图形完全制作完毕，它的框架就会被处理。第二次点击按钮，再次调用该函数，提供的错误为:
Exception in thread "AWT-EventQueue-0" com.github.rcaller.exception.ExecutionException: Can not run C:\Program Files\R\R-3.3.0\bin\x64\Rscript.exe. Reason: java.lang.IllegalThreadStateException
我应该创建新线程来处理 igraph 可视化，还是 RCaller 中是否有一些我缺少的方法可以处理这个问题？在我调用第二个 RCaller 和 RCode block 后，Java 是否会清空我的对象内存？
以下是我可以在不违反保密协议(protocol)的情况下展示的代码内容:
public void actionPerformed(ActionEvent e){//if goButton is clicked
if(e.getSource() == goButton){
JFrame resultFrame = new JFrame("Results: For full readout, use export button below.");//creates entire resultFrame
resultFrame.setLayout(new BorderLayout());
resultFrame.setSize(new Dimension(950,750));
JPanel resultBack = new JPanel();
resultBack.setLayout(new BorderLayout());//creates the resultBack to be placed into JScrollPane
//RESULTS (from user query; calls R commands to fill out JTable)
//create int checkCnt to keep track of how much info is needed
int checkCnt = 0;
for(int t = 0;t<155;t++){
if(selected[0][t]==true){//if targets for one miR with index t is queried
checkCnt++;
}}
//create JTable
//create column names
String[] colNames = {"miRNA", "tar_GS", "tar_FB", "tar_CG", "Score", "Function", "Experiment", "Method"};
//determine threshold
int threshold=0;
if(checkCnt==1){threshold=100;}
if(checkCnt==2){threshold=50;}
if(checkCnt==3){threshold=33;}
if(checkCnt==4){threshold=25;}
if(checkCnt>=5){threshold=20;}
/*create RCaller and wire query to buttons;
code handles table filling,
///code1 handles graphic display*/
RCaller caller = RCaller.create();
RCaller caller1 = RCaller.create();
RCode code = RCode.create();
RCode code1 = RCode.create();
code.R_require("IntramiRExploreR");
code.R_require("futile.logger");
code.R_require("devtools");
code.R_require("Runiversal");
code1.R_require("IntramiRExploreR");
code1.R_require("futile.logger");
code1.R_require("devtools");
//create array of selected miRs to input to R code
String[] chosen = new String[checkCnt];
for(int kk=0;kk<checkCnt;kk++){
chosen[kk] = litmiR(selected)[kk];
}
code.addStringArray("miR", chosen);
code.addInt("thresh", threshold);
code1.addStringArray("miR", chosen);
code1.addInt("thresh", threshold);
String method =new String();
if(Pears.isSelected()){
method="Pearson";
code.addString("method", method);
code1.addString("method", method);
}
else if(Dist.isSelected()){
method="Distance";
code.addString("method", method);
code1.addString("method", method);
}
else{
method="Both";
code.addString("method", method);
code1.addString("method", method);
}
if(Affy1.isSelected()){
String Platform="Affy1";
code.addString("Platform", Platform);
code1.addString("Platform", Platform);
}
else{
String Platform="Affy2";
code.addString("Platform", Platform);
code1.addString("Platform", Platform);
}
code.addRCode("yy <-Visualisation(miR,mRNA_type=c('GeneSymbol'),method,thresh,platform=Platform)");
String [] aa= caller.getParser().getAsStringArray("miRNA");
String [] aa1= caller.getParser().getAsStringArray("Target_GeneSymbol");
String [] aa2= caller.getParser().getAsStringArray("Targets_FBID");
String [] aa3= caller.getParser().getAsStringArray("Targets_CGID");
double [] aa4= caller.getParser().getAsDoubleArray("Score");
//convert double array to string array
String [] sa4= new String[aa4.length];
for(int ss=0;ss<aa4.length;ss++){
sa4[ss]= Double.toString(aa4[ss]);
}
String [] aa5 = caller.getParser().getAsStringArray("GeneFunction");
String [] aa6 = caller.getParser().getAsStringArray("Experiments");
//create JTable objects
String[][] results = new String[checkCnt*threshold][8];
int w = 0;
int x = 0;
for(int n=0;n<checkCnt;n++){
for(int jj=0;jj<threshold;jj++){//first miR
results[jj+w][0]=aa[jj+x*threshold];//the first miR, then the next one after n loops once
results[jj+w][1]=aa1[jj+x*threshold];//tar_GS
results[jj+w][2]=aa2[jj+x*threshold];//tar_FB
results[jj+w][3]=aa3[jj+x*threshold];//tar_CG
results[jj+w][4]= sa4[jj+x*threshold];//Score
results[jj+w][5]=aa5[jj+x*threshold];//Function
results[jj+w][6]=aa6[jj+x*threshold];//Experiment
}
w=w+threshold;
x++;
}
System.out.println(checkCnt);
//make JTable
JTable resultTable = new JTable(results, colNames);
//create scroll pane to embed results JTable in; allow for vertical scrolling
JScrollPane scrollTable = new JScrollPane(resultTable);
resultTable.setFillsViewportHeight(true);
scrollTable.setPreferredSize(new Dimension(resultBack.getWidth(),(resultFrame.getHeight()-150)));
scrollTable.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
scrollTable.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
scrollTable.getVerticalScrollBar().setUnitIncrement(12);
//create bottom buttonPanel to allow for visualization, exportation, and ontological research
JPanel buttonPanel = new JPanel();
buttonPanel.setPreferredSize(new Dimension(200, 150));
buttonPanel.setBackground(Color.LIGHT_GRAY);
buttonPanel.setLayout(null);
//create buttons
JButton gOnt = new JButton("Gene Ontology");
gOnt.setFont(new Font("Arial", Font.PLAIN, 18));
gOnt.setBorder(BorderFactory.createLineBorder(Color.BLACK));
gOnt.setBounds(50,50,250,100);
buttonPanel.add(gOnt);
JButton vis = new JButton("Visualization");
vis.setFont(new Font("Arial", Font.PLAIN, 18));
vis.setBorder(BorderFactory.createLineBorder(Color.BLACK));
vis.setBounds(650,50,250,100);
buttonPanel.add(vis);
vis.addActionListener(new ActionListener(){
**public void actionPerformed(ActionEvent v){
if(v.getSource() == vis){
code1.addRCode("yy1<-Visualisation(miR,mRNA_type=c('GeneSymbol'),method,thresh,platform=Platform,visualisation = 'igraph',layout = 'interactive')");
caller1.setRCode(code1);
caller1.runAndReturnResult("yy1");
}
}
});**
JButton exp = new JButton("Export as .txt file");
exp.setFont(new Font("Arial", Font.PLAIN, 18));
exp.setBorder(BorderFactory.createLineBorder(Color.BLACK));
exp.setBounds(350, 50, 250, 100);
buttonPanel.add(exp);
resultFrame.setLocation(470,150);//add in the panels and display the resultFrame
resultFrame.add(buttonPanel, BorderLayout.PAGE_END);
resultFrame.add(scrollTable, BorderLayout.PAGE_START);
resultFrame.setVisible(true);
}}});
关注的领域是我的 JButton vis 的 ActionListener。我绝对确定其他一切都很好，但 igraph 在填充后首先没有响应，然后第二次调用提供了 IllegalThreadException 错误。
最佳答案
这是我首先要检查的内容:
不能从非 gui 线程修改 GUI。
确保您有一个后台线程将信息传递到 GUI。否则GUI将变得无响应，直到处理完成(这是在没有后台线程的情况下)
您始终可以在 actionPerformed 代码周围放置一个可运行的 gui。
就你的情况
SwingUtilities.invokeLater(new Runnable() {...});
关于java - RCaller、线程处理和 Java GUI，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41781109/