如何使用esprima从Java中解析javascript文件？

<dependency>
    <groupId>org.mozilla</groupId>
    <artifactId>rhino</artifactId>
    <version>1.7.12</version>
</dependency>
<dependency>
    <groupId>org.mozilla</groupId>
    <artifactId>esprima</artifactId>
    <version>2.7.1</version>
</dependency>

import org.mozilla.javascript.CompilerEnvirons;
import org.mozilla.javascript.ErrorReporter;
import org.mozilla.javascript.EvaluatorException;
import org.mozilla.javascript.Parser;
import org.mozilla.javascript.ast.AstRoot;

import java.io.FileReader;
import java.io.IOException;

public class JavaScriptParser {
    public static void main(String[] args) {
        String filePath = "path/to/javascript/file.js";
        try {
            String sourceCode = readFile(filePath);
            AstRoot astRoot = parseJavaScript(sourceCode);
            // 在这里可以对AST进行进一步处理
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static String readFile(String filePath) throws IOException {
        StringBuilder sourceCode = new StringBuilder();
        try (FileReader reader = new FileReader(filePath)) {
            int character;
            while ((character = reader.read()) != -1) {
                sourceCode.append((char) character);
            }
        }
        return sourceCode.toString();
    }

    private static AstRoot parseJavaScript(String sourceCode) {
        CompilerEnvirons compilerEnvirons = new CompilerEnvirons();
        ErrorReporter errorReporter = new ErrorReporter() {
            @Override
            public void warning(String message, String sourceName, int line, String lineSource, int lineOffset) {
                System.err.println("WARNING: " + message);
            }

            @Override
            public void error(String message, String sourceName, int line, String lineSource, int lineOffset) {
                System.err.println("ERROR: " + message);
            }

            @Override
            public EvaluatorException runtimeError(String message, String sourceName, int line, String lineSource, int lineOffset) {
                System.err.println("RUNTIME ERROR: " + message);
                return new EvaluatorException(message);
            }
        };
        Parser parser = new Parser(compilerEnvirons, errorReporter);
        return parser.parse(sourceCode, null, 0);
    }
}