LSP4J-MCP

概述

LSP4J-MCP是一个基于Java的MCP服务器，通过LSP4J封装Eclipse JDT语言服务器，弥合AI助手与Java开发环境之间的鸿沟。它通过MCP协议暴露关键IDE功能，如符号搜索、引用查找、定义查找和文档分析，使AI助手能够理解和导航Java代码库。服务器架构通过LSP4J将Claude Code连接到JDTLS，实现对Java项目的丰富交互。

试试问 AI

装完之后，这里有 7 个你可以让 AI 做的事：

• find_symbols

  Search for Java symbols (classes, methods, fields) by name

  试试:Find all classes named Repository in this project试试:Search for methods containing 'save' in their name试试:Where is the UserService class defined?
• find_references

  Find all references to a symbol at a given file location

  试试:Find all usages of the `processOrder` method at line 45 in OrderService.java试试:Where is the `CustomerRepository` interface used throughout the codebase?试试:Show me all places that call the constructor at line 12 of PaymentGateway.java
• find_definition

  Go to the definition of a symbol

  试试:What is the definition of the method being called at line 78, column 15 in CheckoutController.java?试试:Take me to the implementation of the interface method at line 23 in MyService.java
• document_symbols

  Get all symbols defined in a Java file

  试试:List all methods and fields in the Customer.java file试试:What symbols are defined in src/main/java/com/example/service/OrderService.java?试试:Give me an overview of the structure of ConfigurationManager.java
• find_interfaces_with_method

  Find all interfaces containing a method with a given name

  试试:Which interfaces define a method called 'findById'?试试:Find all classes that have a method named 'process'试试:Show me all interfaces containing the 'validate' method

可对比工具

安装

mvn clean package

{
  "mcpServers": {
    "java-lsp": {
      "command": "java",
      "args": [
        "-jar",
        "/path/to/LSP4J-MCP/target/lsp4j-mcp-1.0.0-SNAPSHOT.jar",
        "/path/to/your/java/project",
        "jdtls"
      ],
      "env": {
        "LOG_FILE": "/tmp/lsp4j-mcp.log"
      }
    }
  }
}

FAQ

这个MCP服务器提供哪些Java IDE功能？

该服务器提供符号搜索、引用查找、定义跳转、文档符号和接口方法发现等功能 - 基本上是Java IDE的核心导航功能。

我能否将其与Claude以外的AI助手一起使用？

README中特别提到了Claude，但由于它实现了标准的MCP协议，它应该可以与任何支持工具调用的MCP兼容AI助手一起工作。

它是否支持非Maven的Java项目？

README没有明确说明，但由于它连接到JDTLS（IDE无关），它应该可以与任何标准的Java项目结构一起工作。

LSP4J-MCP 对比