无 JSON 指针示例
最简单的使用方式是不指定 JSON 指针。 加载器将加载它在 JSON 对象中找到的所有字符串。 示例 JSON 文件：{
"texts": ["This is a sentence.", "This is another sentence."],
"nestedTexts": {
"one": "This is a sentence nested in an object.",
"two": "This is another sentence nested in an object."
}
}
import { JSONLoader } from "@langchain/classic/document_loaders/fs/json";
const loader = new JSONLoader("src/document_loaders/example_data/example.json");
const docs = await loader.load();
/*
[
Document {
pageContent: 'This is a sentence.',
metadata: { source: 'example.json', line: 1 }
},
Document {
pageContent: 'This is another sentence.',
metadata: { source: 'example.json', line: 2 }
},
Document {
pageContent: 'This is a sentence nested in an object.',
metadata: { source: 'example.json', line: 3 }
},
Document {
pageContent: 'This is another sentence nested in an object.',
metadata: { source: 'example.json', line: 4 }
}
]
*/
使用 JSON 指针示例
您可以选择要从 JSON 对象中的哪些键提取字符串。 在此示例中，我们只想从 “from” 和 “surname” 条目中提取信息。{
"1": {
"body": "BD 2023 SUMMER",
"from": "LinkedIn Job",
"labels": ["IMPORTANT", "CATEGORY_UPDATES", "INBOX"]
},
"2": {
"body": "Intern, Treasury and other roles are available",
"from": "LinkedIn Job2",
"labels": ["IMPORTANT"],
"other": {
"name": "plop",
"surname": "bob"
}
}
}
import { JSONLoader } from "@langchain/classic/document_loaders/fs/json";
const loader = new JSONLoader(
"src/document_loaders/example_data/example.json",
["/from", "/surname"]
);
const docs = await loader.load();
/*
[
Document {
pageContent: 'LinkedIn Job',
metadata: { source: 'example.json', line: 1 }
},
Document {
pageContent: 'LinkedIn Job2',
metadata: { source: 'example.json', line: 2 }
},
Document {
pageContent: 'bob',
metadata: { source: 'example.json', line: 3 }
}
]
通过 MCP 将这些文档连接到 Claude、VSCode 等，以获取实时答案。