import os import tkinter as tk from tkinter import filedialog, messagebox from pdfminer.high_level import extract_text root = tk.Tk() root.title("PDF文档信息搜索") def browse_file(): file_path = filedialog.askopenfilename() if file_path: file_entry.delete(0, tk.END) file_entry.insert(0, file_path) def search(): file_path = file_entry.get() keyword = keyword_entry.get() if not os.path.exists(file_path): messagebox.showerror("错误", "文件不存在") return try: text = extract_text(file_path) if keyword in text: result_text.delete("1.0", tk.END) result_text.insert(tk.END, text) else: messagebox.showinfo("提示", "未找到关键词") except: messagebox.showerror("错误", "提取文本信息时出错") file_label = tk.Label(root, text="选择文件:") file_label.grid(row=0, column=0, padx=5, pady=5, sticky="e") file_entry = tk.Entry(root, width=50) file_entry.grid(row=0, column=1, padx=5, pady=5) file_button = tk.Button(root, text="浏览", command=browse_file) file_button.grid(row=0, column=2, padx=5, pady=5) keyword_label = tk.Label(root, text="搜索关键词:") keyword_label.grid(row=1, column=0, padx=5, pady=5, sticky="e") keyword_entry = tk.Entry(root, width=50) keyword_entry.grid(row=1, column=1, padx=5, pady=5) search_button = tk.Button(root, text="搜索", command=search) search_button.grid(row=2, column=1, padx=5, pady=5) result_label = tk.Label(root, text="搜索结果:") result_label.grid(row=3, column=0, padx=5, pady=5, sticky="e") result_text = tk.Text(root, width=80, height=20) result_text.grid(row=4, column=0, columnspan=3, padx=5, pady=5) root.mainloop()上述代码添加一个保存搜索结果按钮

可以在GUI界面中添加一个保存搜索结果的按钮，并在按钮的回调函数中添加文件保存的逻辑。下面是添加保存按钮的代码：

def save_result():
    result = result_text.get("1.0", tk.END)
    if not result:
        messagebox.showinfo("提示", "搜索结果为空，无法保存")
        return
    file_path = file_entry.get()
    file_dir, file_name = os.path.split(file_path)
    output_file = os.path.join(file_dir, "search_result.txt")
    with open(output_file, "w", encoding="utf-8") as f:
        f.write(result)
    messagebox.showinfo("提示", f"搜索结果已保存到 {output_file}")

save_button = tk.Button(root, text="保存结果", command=save_result)
save_button.grid(row=2, column=2, padx=5, pady=5)

在这个代码中，我们定义了一个`save_result`函数，用于保存搜索结果。函数中首先获取搜索结果的文本内容，并检查是否为空。如果结果不为空，则获取输入的文件路径，并从中提取出文件夹路径和文件名，然后将搜索结果保存到同级目录下名为`search_result.txt`的文件中。最后使用`messagebox`弹出一个提示框，告知保存结果的位置。

然后在主函数中添加保存按钮的代码，即可实现保存搜索结果的功能：

search_button = tk.Button(root, text="搜索", command=search)
search_button.grid(row=2, column=1, padx=5, pady=5)

save_button = tk.Button(root, text="保存结果", command=save_result)
save_button.grid(row=2, column=2, padx=5, pady=5)

result_label = tk.Label(root, text="搜索结果:")
result_label.grid(row=3, column=0, padx=5, pady=5, sticky="e")

result_text = tk.Text(root, width=80, height=20)
result_text.grid(row=4, column=0, columnspan=3, padx=5, pady=5)

完整代码如下：

import os
import tkinter as tk
from tkinter import filedialog, messagebox
from pdfminer.high_level import extract_text

root = tk.Tk()
root.title("PDF文档信息搜索")

def browse_file():
    file_path = filedialog.askopenfilename()
    if file_path:
        file_entry.delete(0, tk.END)
        file_entry.insert(0, file_path)

def search():
    file_path = file_entry.get()
    keyword = keyword_entry.get()
    if not os.path.exists(file_path):
        messagebox.showerror("错误", "文件不存在")
        return
    try:
        text = extract_text(file_path)
        if keyword in text:
            result_text.delete("1.0", tk.END)
            result_text.insert(tk.END, text)
        else:
            messagebox.showinfo("提示", "未找到关键词")
    except:
        messagebox.showerror("错误", "提取文本信息时出错")

def save_result():
    result = result_text.get("1.0", tk.END)
    if not result:
        messagebox.showinfo("提示", "搜索结果为空，无法保存")
        return
    file_path = file_entry.get()
    file_dir, file_name = os.path.split(file_path)
    output_file = os.path.join(file_dir, "search_result.txt")
    with open(output_file, "w", encoding="utf-8") as f:
        f.write(result)
    messagebox.showinfo("提示", f"搜索结果已保存到 {output_file}")

file_label = tk.Label(root, text="选择文件:")
file_label.grid(row=0, column=0, padx=5, pady=5, sticky="e")

file_entry = tk.Entry(root, width=50)
file_entry.grid(row=0, column=1, padx=5, pady=5)

file_button = tk.Button(root, text="浏览", command=browse_file)
file_button.grid(row=0, column=2, padx=5, pady=5)

keyword_label = tk.Label(root, text="搜索关键词:")
keyword_label.grid(row=1, column=0, padx=5, pady=5, sticky="e")

keyword_entry = tk.Entry(root, width=50)
keyword_entry.grid(row=1, column=1, padx=5, pady=5)

search_button = tk.Button(root, text="搜索", command=search)
search_button.grid(row=2, column=1, padx=5, pady=5)

save_button = tk.Button(root, text="保存结果", command=save_result)
save_button.grid(row=2, column=2, padx=5, pady=5)

result_label = tk.Label(root, text="搜索结果:")
result_label.grid(row=3, column=0, padx=5, pady=5, sticky="e")

result_text = tk.Text(root, width=80, height=20)
result_text.grid(row=4, column=0, columnspan=3, padx=5, pady=5)

root.mainloop()