听听deepseek

src="https://img2024.cnblogs.com/blog/27612/202602/27612-20260216185757478-107452367.png"

alt="deepseek"

src="https://img2024.cnblogs.com/blog/27612/202602/27612-20260216190547681-911891816.jpg"

alt="langgraph4j"

节点(NodeAction)、边(EdgeAction)、状态(AgentState)

https://deepwiki.com/langgraph4j/langgraph4j

顺序工作流

src="https://img2024.cnblogs.com/blog/27612/202602/27612-20260216194543429-1345402085.png"

alt="lg4j_01"

class="brush:java;gutter:true;">import

org.bsc.langgraph4j.action.NodeAction;

import

org.bsc.langgraph4j.state.AgentState;import

java.util.Map;/***

class="brush:java;gutter:true;">import

org.bsc.langgraph4j.action.NodeAction;

import

org.bsc.langgraph4j.state.AgentState;import

java.util.Map;/***

注：节点上可以携带数据（即：节点的状态），当工作流运行至本节点时，apply()方法将会调用，业务处理逻辑在此处理（如何：包括调用LLM，调用其它接口来更新状态）

class="brush:java;gutter:true;">import

org.bsc.langgraph4j.GraphDefinition;

import

org.bsc.langgraph4j.GraphRepresentation;

import

org.bsc.langgraph4j.GraphStateException;

import

org.bsc.langgraph4j.StateGraph;

import

org.bsc.langgraph4j.state.AgentState;import

java.util.Map;import

org.bsc.langgraph4j.action.AsyncNodeAction.node_async;/***

LangGraph4j

getSequenceGraph();//打印图的mermaid代码System.out.println(sequenceGraph.getGraph(GraphRepresentation.Type.MERMAID,

"Sequence

true).content());//编译图并运行（初始数据值为

test->test-init-valuesequenceGraph.compile()

"test-init-value"))

{//运行结束后，会执行本段逻辑System.out.println(c.data());});}public

static

StateGraph<>(AgentState::new)//向图中添加2个节点.addNode("node-1",

node_async(new

Node1Action())).addNode("node-2",

node_async(new

Node2Action()))//加一条边（开始->node1).addEdge(GraphDefinition.START,

"node-1")//加1条边(node1->node2).addEdge("node-1",

"node-2")//加1条边(node2->结束).addEdge("node-2",

class="brush:bash;gutter:true;">current

Node: