【Android】XML文件读取-创新互联

在系统应用中存在配置文件，包含了应用运行所需要的默认数据，此数据保存在xml文件中，需要应用读取此xml文件获取到数据。

192.168.1.104000120962096

设置一个Bean类保存信息

public class MySetBean {private String ip;
    private String port;
    private String user;
    private String password;

    public MySetBean() {}

    public MySetBean(String ip, String port, String user, String password) {this.ip = ip;
        this.port = port;
        this.user = user;
        this.password = password;
    }

    public String getIp() {return ip;
    }

    public void setIp(String ip) {this.ip = ip;
    }

    public String getPort() {return port;
    }

    public void setPort(String port) {this.port = port;
    }

    public String getUser() {return user;
    }

    public void setUser(String user) {this.user = user;
    }

    public String getPassword() {return password;
    }

    public void setPassword(String password) {this.password = password;
    }

    @Override
    public String toString() {return "MySetBean{" +
                "ip='" + ip + '\'' +
                ", port='" + port + '\'' +
                ", user='" + user + '\'' +
                ", password='" + password + '\'' +
                '}';
    }

    @Override
    public boolean equals(Object o) {if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        MySetBean mySetBean = (MySetBean) o;
        return Objects.equals(ip, mySetBean.ip) && Objects.equals(port, mySetBean.port) && Objects.equals(user, mySetBean.user) && Objects.equals(password, mySetBean.password);
    }

    @Override
    public int hashCode() {return Objects.hash(ip, port, user, password);
    }
}

读取xml文件数据

public class XMLUtil {public MySetBean ReadXML(Context context, String sXMLFile) {MySetBean setBean = new MySetBean();

        try {//1.获得DOM解析器的工厂示例:
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            //2.从Dom工厂中获得dom解析器
            DocumentBuilder builder = dbFactory.newDocumentBuilder();
            //3.使用文件的路径+文件名生成File对象
            File tempFile = new File(sXMLFile);
            //如果存在
            if (tempFile.exists()) {//                Toast.makeText(context, "正在读取系统配置文件", Toast.LENGTH_SHORT).show();
            } else {Toast.makeText(context, "系统配置文件不存在", Toast.LENGTH_SHORT).show();
                return null;
            }

            FileInputStream inputStream = new FileInputStream(tempFile);

            Document document = null;
            if (inputStream != null) {document = builder.parse(inputStream);
            }
            //4.得到文档中名称为accent的元素的结点,文件中只有一个所以不需要遍历
            NodeList nodeList = document.getElementsByTagName("accent").item(0).getChildNodes();

            for (int i = 0; i< nodeList.getLength(); i++) {if (nodeList.item(i).getNodeType() == Node.ELEMENT_NODE) {//读取配置信息
                    if (nodeList.item(i).getNodeName().equals("ip")) {setBean.setIp(nodeList.item(i).getFirstChild().getNodeValue().trim());
                    }
                    if (nodeList.item(i).getNodeName().equals("port")) {setBean.setPort(nodeList.item(i).getFirstChild().getNodeValue().trim());
                    }
                    if (nodeList.item(i).getNodeName().equals("user")) {setBean.setUser(nodeList.item(i).getFirstChild().getNodeValue().trim());
                    }
                    if (nodeList.item(i).getNodeName().equals("password")) {setBean.setPwd(nodeList.item(i).getFirstChild().getNodeValue().trim());
                    }
                }
            }
            //关闭文件
            inputStream.close();
            tempFile = null;
        } catch (Exception e) {e.printStackTrace();
        }
        return setBean;
    }
}

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