java使用PrintWriter向前端打印示例

java使用PrintWriter向前端打印示例
解决方法：
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
PrintWriter out = null;

try {
    out = response.getWriter();
} catch (IOException var4) {
throw new RuntimeException("输出json错误");
}

if (msgObj instanceof String) {
    out.write((String)msgObj);
} else {
    out.write(JSON.toJSONString(msgObj));
}

out.flush();
out.close();

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