Comparing Four Ways to Connect qwen-plus in a Spring Boot App
A Juejin AI tutorial implements the same “你是谁？” prompt with qwen-plus through DashScope’s official Java SDK, direct HTTP, Spring AI with Spring AI Alibaba, and LangChain4j. The author recommends using the official SDK to verify credentials, model configuration, and connectivity before moving to Spring AI for business development, while presenting HTTP as a protocol-inspection option and LangChain4j as the shortest but community-dependent implementation.
The source provides runnable examples, configuration details, and troubleshooting guidance for choosing among four common ways of integrating qwen-plus into Java applications.
适合人群：Spring Boot 会一点，想接大模型，但被"四种接入方式"卡在第一步的同学。
上一篇把 12 个名词理清了，但那只是纸面功夫。真正打开 IDEA，第一个问题立刻变成：
这四种写法，我到底敲哪种？
于是我把同一句话——「你是谁？」——用四种方式各写了一遍。代码全部贴出来，谁能用、谁坑多，跑完就清楚了。
一、先把结论放这儿
#DashScope#qwen-plus#Spring AI#Spring AI Alibaba#LangChain4j#Spring Boot#JDK